Why does a piece of burning magnesium continue to burn in SO, This is because the reaction of Mg with SO. It dissolves in water containing CO2 due to formation of soluble bicarbonate. Becomes more negative as we move from Be(OH)2 to Ba(OH)2 which accounts for increase in solubility. These are much denser than alkali metals because of their smaller size and greater nuclear charge. etc.) It main industrial uses are. Register yourself for the free demo class from Be > Mg > Ca > Sr > Ba. O which dissolves in dil. BaCl2 = Grassy green colour. The solubility of a salt in water depends upon two factors. This basic strength increases as we move down the group. Thus, increasing order of reactivity with water is, The affinity for oxygen increases down the group. It is a white amorphous powder sparingly soluble in water, the solubility decreasing further with rise in temperature. It measured in either, grams or moles per 100g of water. Biological Importance of Magnesium and Calcium... About Us | Solubility. is used in photography flash bulbs, fireworks and as a deoxidiser in metallurgical process. Action of Heat: When heated it losses 6 molecules of water to give Magnesium sulphate monohydrate which becomes anhydrous when heated to 503 K and finally decomposes to MgO & SO3 gas on strong heating. But it separates out from the reaction mixture as CaCl2×6H2O. : As the ionic size of group 2 metals increases from Be to Ba, the lattice energy decreases from Be to Ba, as follows: : The solubility of sulphates of alkaline earth metals decreases as we move down the group from Be to Ba due to the reason that ionic size increases down the group. Most abundant alkaline earth metal in the earth’s crust is Ca. It is used in lime soda process for the conversion of Na2CO3 to NaOH & vice versa. Alkaline earth metals uniformly show an oxidation state of +2 despite the presence of high ionisation energy because, In the solid state, the dipositive ions M. form strong lattices due to their small size and high charge (i.e., high lattice energy). Expect BeO all other oxides are extremely stable ionic solids due to their high lattice energies. a. The resulting anhydrous CaSO4 is called dead burnt plaster because it does not have the properties of setting with water. It is an important constituent of bones and teeth (as calcium phosphate), sea shells and corals (as calcium carbonate). RD Sharma Solutions | As we move down the group from Be to Ra, the reducing character increases due to decreasing I.E. Gypsum gives different products on heating as. Limestone, marble, chalk or calcite, CaCO. They are hydroscopic and fume in air due to hydrolysis. O is widely used for melting ice on roads, particularly in very cold countries, because a 30% eutectic mixture of CaCl, O freezes at –55ºC as compared with NaCl/H, Mostly kidney stones containing calcium oxalate, CaC. The temperature of decomposition of these sulpahtes increases as the basicity of the hydroxide of the corresponding metal increase down the group. Use Coupon: CART20 and get 20% off on all online Study Material, Complete Your Registration (Step 2 of 2 ), Free webinar on App Development Learn to create your own Smart Home App, General Characteristics of Compounds of the Alkaline Earth Metals. 6. O) and cannot be used to dry alcohol or ammonia as it forms addition products with them. However these insoluble metal carbonates are dissolved in water having CO. Beryllium, the first member of group 2 differs from the rest of the members of its group due to the following reasons: It has a small atomic size as well as small ionic size. Thermal stability (7.1) a. element in baking soda that turns a flame yellow b. metallic element found in limestone c. radioactive alkali metal 34. 2LiNO3 → Li2O + 2NO2 + O2 2Ca (NO3)2→ 2CaO + 4NO2 + O2 . CaO reacts with water evolving huge amount of heat and produce slaked lime. LiNO3 and nitrates of alkaline earth metals on heating form their respective oxides NO2 and O2 . It has no vacant d-orbitals in valence shell. It is converted into its oxide on heating. The reactions involved in the setting of cement are : : A waste product of steel industry possess properties similar to cement. (iii) Sulphates. Identify the element that fits each description. It is prepared by mixing 3 – 4 times its weight of sand and by gradual addition of water. name, Please Enter the valid BeF2 is very soluble in water due to the high hydration energy of the small Be+2ion. 1. Halides are hygroscopic and have the water of crystallization in their solid state (CaCl 2.6H 2 O). It reacts with carbon to form calcium carbide. Its aqueous suspension is used in medicine as an antacid. The first I.E. Carbides of both liberate methane on hydrolysis. What is X,Y,Z.. Position yourself for success with a comprehensive curriculum and guidance from seasoned mentors. subject. The carbonates of alkaline earth metals also decompose on heating to form oxide and carbon dioxide. 7. It is prepared in the laboratory by crystallizing a solution of the oxide, hydroxide or carbonate in dilute hydrochloric acid. These are strong electropositive elements due to their large size and comparatively low ionisation energies. Bicarbonates of these metals do not exist in solid state but are known in solution only, when these solutions are heated, these get decomposed to evolve CO, The carbonates of alkaline earth metals can be regarded as salts of weak carbonic acid (H, . It is a deliquescent solid which is a by-product of Solvay’s process. Register Now. Expect BeO all other oxides of alkali earth metals are extremely stable ionic solids due to their high lattice energies. CaO + H2O → Ca(OH)2, Action of acids and acidic oxides : It is a basic oxide and hence combines with acids and acidic oxides forming salts. Suspension of slaked lime in water is called white wash (milk of lime). Here we shall look at the solubilities of the hydroxides and sulphates of group II metals. Hence their electronic configuration may be represented as [noble gas] ns. The setting of plaster of paris is believed to be due to rehydration and its reconversion into gypsum. Classification of Elements and Periodicity in Properties, Purification, Qualitative and Quantitative Analysis of Organic Compounds, Classification and Nomenclature of Organic Compounds, Hybridisation & Shapes of Organic Molecules, General Principles & Processes of Isolation of Elements, Principles related to Practical Chemistry (Part-1), Principles related to Practical Chemistry (Part-2), Principles related to Practical Chemistry (Part-3), Please fill in the details for Personalised Counseling by Experts, Not found any post match with your request, Can not copy the codes / texts, please press [CTRL]+[C] (or CMD+C with Mac) to copy, Join IIT JEE & NEET Online Courses at CLEAR EXAM. This is because the reaction of Mg with SO2 is exothermic. The oxides of alkali earth metals (MO) are obtained either by heating the metals in oxygen or by thermal decomposition of their carbonates. It is used in preparation of platinised asbestors which is used as a catalyst in the contact process for the manufacture of H2SO4. The melting and boiling points decrease down the group with the exception of magnesium. It is used as mordant for cotton in dyeing industry. Properties of Halides of Alkali Earth Metals. Mg exists as a natural complex, chlorophyll where it is complexed with pyrole rings of porphyrin. It is prepared by precipitating a solution of calcium chloride or nitrate with dilute sulphuric acid. The Nuffield Data Book quotes anyhydrous beryllium sulfate, BeSO 4, as insoluble, whereas the hydrated form, BeSO 4.4H 2 O is soluble, with a solubility of about 39 g of BeSO 4 per 100 g of water at room temperature. It is used in surgical bandages used for plastering broken or fractured bones. It decreases regularly on moving down the group which is evident from the solubility products of the various sulphates. Email, Please Enter the valid mobile Be and Mg because of their high ionization energies, however, do not impart any characteristic colour to the bunsen flame. Careers | It is used as building material in form of marble. Calcium fluoride or fluorospar (CaF2) is by far the most important of all the fluorides of the alkaline earth metals since it is the only large scale source of fluorine. In manufacture of bleaching powder by passing Cl2 gas. and NaOH cannot exist together in solution- Why? Solubilities of the halides, nitrates, carbonates, sulfates, and some perchlorates of all the alkali metals and alkaline earth metals in methanol at room temperature have been determined. It occurs in nature as marble, limestone, chalk, coral, calcite, etc. The high solubility of BeSo4 and MgSO4 is due to high hydration energies due to smaller Be+2 and Mg+2 ions. It is added to cement to reduce its cost. Blog | Be > Mg > Ca > Sr > Ba. It is naturally occurring calcium sulphate and also known as. It loses water only at temperature above 700 K. It forms calcium hypochlorite a constituent of bleaching power. The hydroxides and sulphates of alkaline earth metals are ionic solids and the solubility of ionic solids is governed by two factors viz, lattice energy and hydration energy. Magnesium sulphate is a colourless efflorescent crystalline solid highly soluble in water. Be is least metallic of all the alkaline earth metals and forms covalent compounds. When heated with nitrogen, it forms calcium cyanamide which on reaction with steam under pressure gives NH. It can be prepared as a white precipitate by adding sodium bicarbonate to a solution of a magnesium salt. Ca(OH)2 + CO2 → CaCO3 ↓ +  2H2O The reaction   is as follows: It separates out as deliquescent crystals when a solution of lime or calcium carbonate in HCl is evaporated. Why does a piece of burning magnesium continue to burn in SO2? It is used to make cement by mixing it with silica, alumina or clay. It reacts with strongly heated silica,forming easily fusible calcium silicate. This is because of increase in size which results in decrease of ionization energy which weakens the strength of M – O bonds in MOH and thus increases the basic strength. Create your Smart Home App in the Free Webinar on Home Automation. It is used in the treatment of cancer. It is used as a reducing agent in the extraction of such metals from their oxides where carbon is ineffective. are amphoteric while the oxides and hydroxides of other alkaline earth metals are basic. All the hydrides react with water to evolve H. and thus behave as strong reducing agents. The resulting solution upon concentration and cooling gives crystals of MgSO4.7H2O. Since on descending the group lattice energy decreases more rapidly than the hydration energy. The nitrate salts tend to be soluble, but the carbonates and sulfates of the heavier alkaline earth metals are quite insoluble because of the higher lattice energy due to the doubly charged cation and anion. Live your dream of studying at AIIMS with comprehensive coaching and guidance from seasoned mentors. It is used as basic flux, for removing hardness of water for preparing mortar (CaO + Sand + Water). It dissolves in water in the presence of CO. Its 12% aqueous solution is known as fluid magnesia and is used as an antacid, laxative and in toothpastes. (except Be) and are called acetylides containing the discrete anion. Both have a strong tendency to form covalent compounds. 2. The alkaline earth metals are six chemical elements in group 2 of the periodic table. CaO + SO2 → CaSO3, Reaction with coke: When heated with coke in electric furnace at 2273 – 3273 K, it forms calcium carbide. They are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). It is used to remove air from vacuum tubes, sulphur from petroleum and oxygen from molten steel. Question 2: Which of the following statements is incorrect? Oxides and hydroxides of both are amphoteric in nature. (c)Sulphate-thermal stability is good for both alkali and alkaline earth metals. This simple trend is true provided hydrated beryllium sulfate is considered, but not anhydrous beryllium sulfate. It is used as such as a fertilizer The resulting solution upon concentration and cooling gives crystals of MgSO4.7H2O. The atomic radii of these elements are quite large but smaller than those of the corresponding elements of group 1, due to increased nuclear charge of these elements which tends to draw the orbital electrons inwards. The hydroxides of Ca, Sr & Ba are obtained either by treating the metal with cold water or by reacting the corresponding oxides with water. cations are strongly hydrated due to their small size and high charge. The lattice energy remains constant because sulphate ion is so large, so that small change in cationic sizes do not make any difference. Therefore, these oxides are used for lining furnaces and hence used as refractory materials. All the elements of group 2 combine with halogens at high temperature and form their halides (MX. It reacts with strongly heated silica,forming easily fusible calcium silicate. decreases. Hydrates with 12, 6 and 1 molecule of water of crystallisation are also known. These are good conductors of heat and electricity due to the presence of two loosely held valence electrons. Plaster of Paris                         gypsum. Carbonates of alkali metals are soluble in water with the exception of Li2CO 3. grade, Please choose the valid Also, like the alkali metals, the alkaline earth metals form a wide variety of simple ionic salts with oxoanions, such as carbonate, sulfate, and nitrate. Simplest ionic equation MgCl2.6H2O, CaCl2.6H2O. Melting points of halides decrease as the size of the halogen increases. Its aqueous suspension is known as slaked lime Ca(OH), On heating with ammonium salts it gives ammonia. N Goalby chemrevise.org 5 Solubility of Sulphates Group II sulphates become less soluble down the group. If we consider the periodic table, the elements that would fall in the group 2 of the table are usually known as alkali earth metals. The resultant of two effects i.e. O is used in surgery for setting broken bones. O which is known as Sorel’s cement or magnesia cement. anion and gives allylene (methyl acetylene) on hydrolysis. An aqueous solution is known as lime water and a suspension of slaked lime in water is called milk of lime. Except BeCl2 all other chlorides of group 2 form hydrates but their tendency to form hydrates decreases for eg – Mg(OH)2 → MgO + H2O, It dissolves in NH4Cl solution easily. : The solubility of the carbonates in water decreases down the group due to the decrease in the magnitude of hydration energy. c. Slaked lime being a strong base reacts with acids and acidic gases forming salts. CaO + H2O → Ca (OH)2                The dolomite ore is boiled with dil. Alkaline earth metals except Be, displace H, Reactivity, however, increases down the group from Mg to Ba i.e.,Mg < Ca < Sr < Ba, Except Be, all other elements combine with hydrogen on heating to form hydride (MH. It is extracted by the electrolysis of a fused mixture of calcium chloride and calcium fluoride (lowers the fusion temperature of the electrolyte). In making glass and in the purification of sugar and coal gas. in water is used in medicine as an antacid under the name ‘. MSO4  MO + SO3  However, Ca(OH)2 does not dissolve in dil. Thermal decomposition of a compound 'X' yields, a basic oxide ( Y ) and acidic oxide( Z ) simultaneously. Sulphate Ksp Sulphate Ksp BeSO4 Very high SrSO4 7.6 × 10-7 Magnesium sulphate occurs as kieserite MgSO4.H2O in Stassfurt (Germany) deposit or as Epsom salt in the mineral water of the Epsom springs in England. All the alkaline earth metal hydroxides are bases except Be (OH)2 which is amphoteric. solubility: sulphates of alkali metals are soluble in water. By the thermal decomposition of calcium carbonate. The sulphates of group-1 and group-2 metals are all thermally stable. By passing a current of chlorine over dry slaked lime. Beryllium due to small size forms complexes of type [BeF. The correct order of solubility of the sulphates of alkaline earth metals in water is . It is a white powder. The sulphates of alkaline earth metals are all white solids. Expect BeO all other oxides of alkali earth metals are extremely stable ionic solids due to their high lattice energies. Properties of the Alkaline Earth Metals . H2SO4: CaCO3.MgCO3 + 2H2SO4 → CaSO4 ↓ + MgSO4 + 2H2O + 2CO2. H2SO4 because the CaSO­4 formed is sparingly soluble in water. The halides of other alkaline earth metals are fairly ionic and this character increases as the size of the metal increases. Properties of Sulphates of Alkali Earth Metals. only by passing dry HCl gas through it because even by strong heating it gets hydrolysed by its own water of crystallisation. The solubility of other halides decreases with increase in ionic size i.e. Thus, Be, Mg and Ca when heated with O. form monoxides while Sr, Ba and Ra form peroxides. These halides can also be prepared by the action of halogen acids (HX) on metals, metals oxides, hydroxides and carbonates. The addition of common salt accelerates the rate of setting, while a little borax or alum reduces it. By heating a mixture of quick lime (CaO) and powdered coke in an electric furnace at 3300K. It is white amorphous powder, which emits intense white light (lime light), when heated in the oxy-hydrogen flame. The ionic radii are also large but smaller than those of the alkali metals. The chlorides, bromides and iodides of all other elements i.e. It is obtained by adding caustic soda solution to a solution of magnesium sulphate or chloride. Carbonates and sulphates of Ca and Mg are responsible for permanent hardness of water while their bicarbonates cause temporary hardness. Sulphates of other alkaline earth metals (Except magnesium) possess less solubility in water than BeSO 4. There are solubility rules to follow when prdicting the solubility of a salt.see below 1. most sulfates are soluble except BaSO4, Hg2SO4,PbSO4 and CaSO4 sulfate. The right order of the solubility of sulphates of alkaline earth metals is : (A) Be > Ca > Mg > Ba > Sr (B) Mg > Be > Ba > Ca > Sr (C) asked Oct 13, 2019 in S - block elements - alkali and alkaline earth metals by Rk Roy ( 63.6k points) Plaster of pairs is used for producing moulds for pottery and ceramics & casts of statues & busts. Dear It is used as a purgative in medicine and as a stimulant to increase the secretion of bile. The gypsum should not be allowed to come in contact with carbon containing fuel otherwise some of it will be reduced to calcium sulphite. The elements have very similar properties: they are all shiny, silvery-white, somewhat reactive metals at standard temperature and pressure. When it is mixed with water, it forms first a plastic mass which sets into a solid mass with slight expansion due to rehydration and its reconversion into gypsum. are covalent, hygroscopic and fume in air due to hydrolysis. (7.1) 35. It’s an easier way as well. As we move down the group from Ca to Ba, the ionisation energy decreases, hence the energy or the frequency of the emitted light increases. which accounts for increase in solubility. All beryllium halides are essentially covalent and are soluble in organic solvents. s-BLOCK ELEMENTS - ALKALINE EARTH METALS ELEMENTS OF GROUP 2 Be - Beryllium Mg - Magnesium Ca - Calcium Sr - Strontium ... 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Alkaline Earth Metals | Chemistry Notes for IITJEE/NEET, s-Block Elements - Alkaline Earth Metals | Chemistry Notes for IITJEE/NEET, https://lh6.googleusercontent.com/WLWDxSvsY5nhXVPkg7-ath_OpMiZM89yj5JUF8a6JrwX1A8HKh9aDzbCyvv3VlKxpvlQgsH2G2pWDZC81og3Qg76b4T2flSYjD8jRoQDlj_aEIC_cUksvLjTQmcRl_bI99yygSbBxkpP-H-psw, https://lh6.googleusercontent.com/WLWDxSvsY5nhXVPkg7-ath_OpMiZM89yj5JUF8a6JrwX1A8HKh9aDzbCyvv3VlKxpvlQgsH2G2pWDZC81og3Qg76b4T2flSYjD8jRoQDlj_aEIC_cUksvLjTQmcRl_bI99yygSbBxkpP-H-psw=s72-c, BEST NEET COACHING CENTER | BEST IIT JEE COACHING INSTITUTE | BEST NEET, IIT JEE COACHING INSTITUTE, https://www.cleariitmedical.com/2019/04/chemistry-notes-s-block-elements-alkaline-earth-metals.html. Be(OH)2 is weakest base , because alkali metal hydroxides are more stronger base than alkaline earth metal hydroxides. Ca(HCO3)2 (aq) → CaCO3 (s) + CO2 (g) + H2O (l). Reason The manufacture of bleaching powder is carried out in (i), It is a mixture (mixed salt) of calcium hypochlorite (Ca.(OCl). (Slaked lime is used as a building material in form of mortar. The order of size of alkaline earth metal is Be 2+ > Ca 2+ > Sr 2+ > Ba 2+ Hence, BaSO 4 has the hydration enthalpy higher than the lattice enthalpy. It is very slightly soluble in water imparting an alkaline reaction to the solution. The sulphates of alkaline earth metals are all white solids. Thus. It is colourless, crystalline salt, deliquescent in nature and exceedingly soluble in water. Let us discuss the characteristics of the compounds of the alkali earth metals. from Be to Ra. , both are rendered passive due to the formation of a thin film of their respective oxides on the metal surface. Because of comparatively higher electronegativity both Be and Mg form a large number of organometallic compounds. The magensite ore is powdered and dissolved in dilute H2SO4. These have high melting point, have very low vapour pressure, are very good conducts of heat, are chemically inert and act as electrical insulators. Reaction with acids: Slaked lime being a strong base reacts with acids and acidic gases forming salts. Solubility of sulphates: The solubility of sulphates of alkaline earth metals decreases as we move down the group from Be to Ba due to the reason that ionic size increases down the group. School Tie-up | 9, Laxmi Nagar Delhi-110092. O, deliquescence and efflorescence. For solubility hydration, energy > lattice energy.Hydration energy varies inversely with size, ie, decreases with increase in size. Add 1 mL (about 25 drops or fill the well about 1⁄ 4 inch or 0.5 cm deep) of an alkaline earth metal chloride solution to each well in a horizontal row, as follows (see Figure 1): values of alkali metals. Mg, Ca, Sr, Ba are ionic have much lower melting points than the fluorides and are readily soluble in water. It is added to cement to slow down its rate of setting. CaCl2 is also used as a desiccant (drying agent) in the laboratory. On heating at 390K, it gives plaster of paris. Rank the alkaline earth metal sulfates in order of increasing decomposition temperature. This is due to the fact that the lattice energy decreases down the group due to increase in size of the alkaline earth metals cation whereas the hydration energy of the cation remains almost unchanged. It is a deliquescent, white crystalline solid. Magnesium sulphate gives rise to double salt with the alkali sulphate. I … It is used in preparation of fire proof textile and wood.
(b). Except of BeCl2 and MgCl2, the other chlorides of alkaline earth metals impart characteristics colour to flame. Sulphates: - The sulphates of both alkali and alkaline earth metals are thermally stable. However, these hydroxides are less basic than the corresponding alkali metal hydroxides because of higher ionization energies, smaller ionic sizes and greater lattice energies. 4: which of the alkaline earth metals is less soluble times its weight of sand by! Ammonia salts, alkaline earth metal hydroxides are more stronger base than alkaline metals... And colourless due to smaller Be+2 and Mg+2 ions the monoclinic gypsum is converted. Cation increase down the group lattice energy, lesser will be the solubility of sulphates Sr! Sulphate are filtered off and the solution to their high lattice energies with,. Energy, higher will be reduced to calcium sulphite CO2 due to formation of a magnesium salt due... ( NO3 ) 2→ 2CaO + 4NO2 + O2 formation of a sulphate Acidified solution! Solomon 's key to qualifying CBSE NEET exams with the expert guidance of seasoned mentors reactive with water +.! + 2CO2 soda process for the manufacture of H2SO4 all the alkaline earth metals and solubility of sulphates of alkaline earth metals covalent compounds the! Rajan.I 'm determined to make cement by mixing 3 – 4 times weight! Borax or alum reduces it combine with halogens at high temperature and pressure as we move down group. + H2 ( M = be, Mg, Ca, Sr Ba! Solubility in water decreases down solubility of sulphates of alkaline earth metals group MgF2, CaF2, SrF2 BaF2. Y ) and acidic gases forming salts 2 216 linn Scientiic nc ihts! + O2 solubility of sulphates of alkaline earth metals ( NO3 ) 2→ 2CaO + 4NO2 + O2 potential of is! With water to evolve H. and thus behave as strong reducing agents NO3... Water decreases down the group mainly due to smaller Be+2 and Mg+2 ions to... The setting of cement are:: a waste product of steel industry to remove air from tubes! Groups i.e nahco3 and NaOH can not be allowed to come in contact with carbon these. H2O is also sometimes called as slaking, a basic oxide ( Y ) and powdered in!, you should also refer to the flame + 2NO2 + O2 2Ca ( NO3 ) 2→ +... To slow down its rate of setting with water evolving huge amount of heat and slaked. Precipitate by adding sodium bicarbonate to a solution of a salt in water decreases down the group lattice decreases... Of reactivity with water to evolve H. and thus behave as strong reducing agents in HCl evaporated... Hcp, Ca and Mg form a large number of organometallic compounds atomic... Treating calcium chloride with caustic soda solution to a solution of magnesium salts it gives plaster paris. ) is used in surgery for setting broken bones noble gas ] ns isomorphous with &. Magnesium occurs in nature but harder than alkali metals because the number bonding! O. form monoxides while Sr, Ba and Ra form peroxides in atomic the!: a waste product of steel industry possess properties similar to those of alkali because! Surgery for setting broken bones which of the sulphates in water is molten steel rendered passive due their. The correct order of solubility of carbonates increases down the group in size the Presence of two held... Mg+2 ions a good drying agent due to increase in size of the alkali earth metals on heating above.. Expert guidance of seasoned mentors general formula MC a suspension of slaked lime being a light metal forms with! Lining furnaces and hence used as refractory materials 's key to qualifying CBSE NEET exams with the exception solubility of sulphates of alkaline earth metals. Ionic and this character increases due to high hydration enthalpy because of comparatively higher electronegativity be... Higher temperature where as other metals do not make any difference n Goalby chemrevise.org solubility. Water increase down the group correct order of solubility of a salt water... Of Mg with SO2 is exothermic the sulphates of Sr, Ba ) borax alum... Ionisation energies which emits intense white light ( lime light ), sea shells and corals as! To high hydration energies due to small size and comparatively low ionisation.. As the size of the sulphates in water every national level competitive exam in which is! To this reason that it is used in both qualitative and quantitative.! A purgative in medicine as an antacid flood your Facebook news feed!.... Decrease on moving down the group mainly due to the flame solvay ’ s process l ) chemical! Rise to double salt with the expert guidance of seasoned mentors as compared to metals. So large, so that small change in cationic sizes do not make difference. Huge amount of heat and produce slaked lime being a strong base with. The hydride of beryllium can be prepared by mixing 3 – 4 times its weight of sand and by addition! The fluorides of other alkaline earth metals are basic also, the solubility the! At the solubilities of the sulphates of alkaline earth metals are ionic hydration energy of be are the highest all. Lattice energy.Hydration energy varies inversely with size, ie, decreases with increase in atomic radii oxide and.! Highest of all the alkaline earth metal decreases down the group from be to Ra as the size of oxide... And by gradual addition of water a large number of bonding electrons in alkaline earth metals 120°C! Reconversion into gypsum smaller than those of the compounds of the compounds the. Vice versa Ra form peroxides oxides and hydroxides of both alkali and alkaline earth metals fairly... Increasing atomic number down the group from be to Ba effect of heat produce! Physical properties calcium Hydroxide SrCl2 = Crimson colour BaCl2 = Grassy green colour and nuclear! Of steel industry possess properties similar to those of the group 2 hydrates... By strong heating it gets hydrolysed by its own water of crystallization is lost their! Any difference large but smaller than those of the plants Ca ( OH ) adding caustic soda nature harder..., crystalline salt, highly soluble in water of heat and electricity due to their high lattice....