Lead is a heavy metal that is denser than most common materials.  Comments Gallium does not occur as a free element in nature, but as gallium(III) compounds in trace amounts in zinc ores and in bauxite.    Other Metals Highly reactive chemically, this element resembles sodium in its behavior and compounds. The Cookies Statement is part of our Privacy Policy. Its physical and chemical properties are most similar to its heavier homologues strontium and barium. Cerium is the second element in the lanthanide series. It is a soft, silvery-white alkali metal. The chemical symbol for Californium is Cf. Potassium Potassium is a chemical element with symbol K and atomic number 19. Potassium: Symbol: K: Atomic Number: 19: Atomic Mass: 39.0983 atomic mass units: Number of Protons: 19: Number of Neutrons: 20: Number of Electrons: 19: Melting Point: 63.65° C: Boiling Point: 774.0° C: Density.862 grams per cubic centimeter: Normal Phase: Solid: Family: Alkali Metals: Period: 4 Potassium is a chemical element with atomic number 19 which means there are 19 protons and 19 electrons in the atomic structure. Rhodium is a rare, silvery-white, hard, corrosion resistant and chemically inert transition metal. All of its isotopes are radioactive. It is an extremely reactive element and a strong oxidising agent: among the elements, it has the highest electron affinity and the third-highest electronegativity, behind only oxygen and fluorine. The atomic mass of potassium is 39.098 atomic mass units. Because the Periodic Table is based on atomic number, Z, and not on atomic mass. Calcium is an alkaline earth metal, it is a reactive pale yellow metal that forms a dark oxide-nitride layer when exposed to air. Manganese is a chemical element with atomic number 25 which means there are 25 protons and 25 electrons in the atomic structure. and Gay-Lussac, L.-J. The chemical symbol for Arsenic is As. The chemical symbol for Tellurium is Te. Atomic Number of Potassium. Francium is a highly radioactive metal that decays into astatine, radium, and radon. Polonium is a chemical element with atomic number 84 which means there are 84 protons and 84 electrons in the atomic structure. Mercury is a heavy, silvery d-block element, mercury is the only metallic element that is liquid at standard conditions for temperature and pressure. Samarium is a chemical element with atomic number 62 which means there are 62 protons and 62 electrons in the atomic structure.    Number of Neutrons Chromium is a steely-grey, lustrous, hard and brittle metal4 which takes a high polish, resists tarnishing, and has a high melting point. The chemical symbol for Lithium is Li. Metallic potassium was first isolated by Sir Humphry Davy in 1807 through the electrolysis of molten caustic potash (KOH). The chemical symbol for Neon is Ne. Pure radium is silvery-white alkaline earth metal. Gallium is a chemical element with atomic number 31 which means there are 31 protons and 31 electrons in the atomic structure. Sodium is an alkali metal, being in group 1 of the periodic table, because it has a single electron in its outer shell that it readily donates, creating a positively charged atom—the Na+ cation. The chemical symbol for Molybdenum is Mo. Despite its high price and rarity, thulium is used as the radiation source in portable X-ray devices. The chemical symbol for Actinium is Ac. www.nuclear-power.net. Uranium is a silvery-white metal in the actinide series of the periodic table. 113Cd has specific absorption cross-section. Helium is a chemical element with atomic number 2 which means there are 2 protons and 2 electrons in the atomic structure. Lead has the highest atomic number of any stable element and concludes three major decay chains of heavier elements. Samarium is a typical member of the lanthanide series, it is a moderately hard silvery metal that readily oxidizes in air. The chemical symbol for Lead is Pb. According to the Jefferson National Linear Accelerator Laboratory, the properties of silver are: 1. Platinum is a dense, malleable, ductile, highly unreactive, precious, silverish-white transition metal. The chemical symbol for Potassium is K.. Atomic Mass of Potassium. Scandium is a chemical element with atomic number 21 which means there are 21 protons and 21 electrons in the atomic structure.  Links, Show Table With: Manganese is a metal with important industrial metal alloy uses, particularly in stainless steels. Lanthanum is a chemical element with atomic number 57 which means there are 57 protons and 57 electrons in the atomic structure. Melting Point: 63.65 °C (336.8 K, 146.57 °F) Boiling Point: 774.0 °C (1047.15 K, 1425.2 °F) Number of Protons/Electrons: 19. The chemical symbol for Francium is Fr. Atomic Number – Protons, Electrons and Neutrons in Potassium. Since all alkali metals have a single electron in their outermost shell, K too has a single electron in its peripheral orbital. K87-1 (31.63 eV) Ref. The chemical symbol for Niobium is Nb. Silicon is a chemical element with atomic number 14 which means there are 14 protons and 14 electrons in the atomic structure. Reference E95. The chemical symbol for Palladium is Pd. An alloy of sodium and potassium (NaK) is used as a heat-transfer medium. Tantalum is a chemical element with atomic number 73 which means there are 73 protons and 73 electrons in the atomic structure. Bromine is a chemical element with atomic number 35 which means there are 35 protons and 35 electrons in the atomic structure. Astatine is a chemical element with atomic number 85 which means there are 85 protons and 85 electrons in the atomic structure. (1969), Discoverer: Scientists at Dubna, Russia (1967)/Lawrence Berkeley Laboratory (1970), Discoverer: Armbruster, Paula and Muenzenberg, Dr. Gottfried, Element Category: unknown, probably a transition metal, Discoverer: David Anderson, Ruhani Rabin, Team Updraft, Element Category: unknown, probably a post-transition metal, Discoverer: Hisinger, Wilhelm and Berzelius, Jöns Jacob/Klaproth, Martin Heinrich. In some respects zinc is chemically similar to magnesium: both elements exhibit only one normal oxidation state (+2), and the Zn2+ and Mg2+ ions are of similar size. Caesium is a chemical element with atomic number 55 which means there are 55 protons and 55 electrons in the atomic structure. K87 The chemical symbol for Potassium is K . agreement. Very soft and malleable, indium has a melting point higher than sodium and gallium, but lower than lithium and tin. It is occasionally found in native form as elemental crystals. Iron is a chemical element with atomic number 26 which means there are 26 protons and 26 electrons in the atomic structure. The chemical symbol for Potassium is K. Potassium was first isolated from potash, the ashes of plants, from which its name derives. 14) A lithium atom is larger than a potassium atom. The chemical symbol for Thallium is Tl. Americium is a transuranic member of the actinide series, in the periodic table located under the lanthanide element europium, and thus by analogy was named after the Americas. Potassium, found in most soils, is an element that is … Total number of protons in the nucleus is called the atomic number of the atom and is given the symbol Z. It is obtained chiefly from the mineral cassiterite, which contains tin dioxide. The chemical symbol for Fluorine is F. Fluorine is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. Nearly all technetium is produced synthetically, and only minute amounts are found in the Earth’s crust. The chemical symbol for Lawrencium is Lr. Atomic Number – Does it conserve in a nuclear reaction? Bismuth is a brittle metal with a silvery white color when freshly produced, but surface oxidation can give it a pink tinge. The chemical symbol for Hafnium is Hf. The chemical symbol for Chromium is Cr. Gadolinium belongs to a rare earth elements (it is one of a set of seventeen chemical elements in the periodic table). Potassium (atomic number 19, symbol K) is a metal and an important element in our diet. Europium is a chemical element with atomic number 63 which means there are 63 protons and 63 electrons in the atomic structure. The nucleus consists of 19 protons (red) and 21 neutrons (blue). Barium is a chemical element with atomic number 56 which means there are 56 protons and 56 electrons in the atomic structure.    Metalloids Sodium is a chemical element having the atomic number 11 and chemical symbol “Na”. Francium is a chemical element with atomic number 87 which means there are 87 protons and 87 electrons in the atomic structure. The chemical symbol for Germanium is Ge. Naturally occurring isotopes This table shows information about naturally occuring isotopes , their atomic masses , their natural abundances , their nuclear spins , and their magnetic moments . Bromine is the third-lightest halogen, and is a fuming red-brown liquid at room temperature that evaporates readily to form a similarly coloured gas. The chemical symbol for Americium is Am. Neptunium metal is silvery and tarnishes when exposed to air. Lead is a chemical element with atomic number 82 which means there are 82 protons and 82 electrons in the atomic structure. The chemical symbol for Oxygen is O. Molybdenum is a chemical element with atomic number 42 which means there are 42 protons and 42 electrons in the atomic structure. Nickel belongs to the transition metals and is hard and ductile. Element 19 of Periodic table is Potassium with atomic number 19, atomic weight 39.0983.    Rare Earth Elements, Basic Information | Atomic Structure | Isotopes | Related Links | Citing This Page. The chemical symbol for Neodymium is Nd. Potassium K (Element 19) of Periodic Table. The bulk properties of astatine are not known with any certainty. The chemical symbol for Scandium is Sc. Metallic potassium was first isolated by Sir Humphry Davy in 1807 through the electrolysis of molten caustic potash (KOH). Germanium is a chemical element with atomic number 32 which means there are 32 protons and 32 electrons in the atomic structure. The atomic mass of potassium is 39.098 atomic mass units. Copper is used as a conductor of heat and electricity, as a building material, and as a constituent of various metal alloys, such as sterling silver used in jewelry, cupronickel used to make marine hardware and coins. The chemical symbol for Bromine is Br. SC85 K II Ground State 1s 2 2s 2 2p 6 3s 2 3p 6 1 S 0 Ionization energy 255100 cm-1 (31.63 eV) Ref. Tellurium is chemically related to selenium and sulfur. The chemical symbol for Holmium is Ho. Oxygen is a colourless, odourless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air. Atomic symbol (on the Periodic Table of Elements): K (from the Latin word for alkali, kalium.) Before a name and symbol are approved, an element may be referred to by its atomic number (e.g., element 120) or by its systematic element name. Europium is one of the least abundant elements in the universe. Arsenic is a chemical element with atomic number 33 which means there are 33 protons and 33 electrons in the atomic structure. Potassium K Element 19 Mass Number: 39 Atomic weight: 39.098 g/mol Atomic number (Z): 19 Electrons: 19 Protons: 19 Neutrons: 20 Period: 4 Group: 1 Block: s Name: Potassium. Chlorine is a yellow-green gas at room temperature. Chemical symbol for Potassium is K. Number of protons in Potassium is 19. 19 K (Potassium Element) Flashcard of Potassium. Naturally occurring potassium is composed of three isotopes, of which 40K is radioactive. Sulfur is a chemical element with atomic number 16 which means there are 16 protons and 16 electrons in the atomic structure. Atomic number (number of protons in the nucleus): 19; Atomic symbol (on the Periodic Table of Elements): K (from the Latin word for alkali, kalium.) Titanium is a chemical element with atomic number 22 which means there are 22 protons and 22 electrons in the atomic structure. Potassium Potassium (K) is a silver-white coloured metal that has the atomic number 19 in the periodic table. A very simple one looks like: Underneath each element is the mass of each element in amu (or atomic mass units). Properties of Potassium-40 Isotope: POTASSIUM-40; Natural Abundance (%) 0.012: Atomic Mass (Da) 39.96399817: Relative Isotopic Mass: 39.96399817: Neutron Number (N)    Electron Configuration Silver is a chemical element with atomic number 47 which means there are 47 protons and 47 electrons in the atomic structure. Atomic weight (average mass of the atom): 39.0983 4. The commercial use of beryllium requires the use of appropriate dust control equipment and industrial controls at all times because of the toxicity of inhaled beryllium-containing dusts that can cause a chronic life-threatening allergic disease in some people called berylliosis. It occurs on Earth as the decay product of various heavier elements. The chemical symbol for Neptunium is Np. Silver is a soft, white, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal. The chemical symbol for Gold is Au. It is the eponym of the lanthanide series, a group of 15 similar elements between lanthanum and lutetium in the periodic table, of which lanthanum is the first and the prototype.    Transition Metals Melting point: 146.08 degrees Fahrenheit (63.38 de… Gadolinium is a chemical element with atomic number 64 which means there are 64 protons and 64 electrons in the atomic structure. All of the alkali metals have a single valence electron in the outer electron shell, which is easily removed to create an ion with a positive charge – a cation, which combines with anions to form salts. Thulium is an easily workable metal with a bright silvery-gray luster. It is even less abundant than the so-called rare earths. Curium is a chemical element with atomic number 96 which means there are 96 protons and 96 electrons in the atomic structure. The element has been in use for hundreds of years. Selenium is a chemical element with atomic number 34 which means there are 34 protons and 34 electrons in the atomic structure. The chemical symbol for Boron is B. Discoverer: Marinsky, Jacob A. and Coryell, Charles D. and Glendenin, Lawerence. If you want to get in touch with us, please do not hesitate to contact us via e-mail: Discoverer: Ramsey, Sir William and Cleve, Per Teodor. Symbol: K. Atomic Number: 19. This page was created by Yinon Bentor. Rubidium is a chemical element with atomic number 37 which means there are 37 protons and 37 electrons in the atomic structure. The chemical symbol for Samarium is Sm. Krypton is a chemical element with atomic number 36 which means there are 36 protons and 36 electrons in the atomic structure. Discoverer: Davy, Sir H. and Thénard, L.-J. The chemical symbol for Platinum is Pt. The chemical symbol for Tantalum is Ta. It is by mass the most common element on Earth, forming much of Earth’s outer and inner core. Elemental rubidium is highly reactive, with properties similar to those of other alkali metals, including rapid oxidation in air. The chemical symbol for Radium is Ra. 13) The electron configuration of potassium is 1s22s22 p63s1. Calcium is a chemical element with atomic number 20 which means there are 20 protons and 20 electrons in the atomic structure. Lutetium is the last element in the lanthanide series, and it is traditionally counted among the rare earths. Copper is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. The chemical symbol for Lanthanum is La. The chemical symbol for Selenium is Se. Thorium metal is silvery and tarnishes black when exposed to air, forming the dioxide. Potassium-41 isotope is used for Potassium-42 (K-42 isotope, 42K isotope) radionuclide (radioisotope) production (can be used in life science for healthcare and medical applications and pharmaceuticals industries); Cadmium is a chemical element with atomic number 48 which means there are 48 protons and 48 electrons in the atomic structure. The chemical symbol for Berkelium is Bk. Use of this web site is restricted by this site's license The chemical symbol for Yttrium is Y. Yttrium is a silvery-metallic transition metal chemically similar to the lanthanides and has often been classified as a “rare-earth element”. Number of Neutrons: 20. Dysprosium is a chemical element with atomic number 66 which means there are 66 protons and 66 electrons in the atomic structure. The information contained in this website is for general information purposes only. The atomic weight … Antimony compounds have been known since ancient times and were powdered for use as medicine and cosmetics, often known by the Arabic name, kohl. Many potassium salts are of utmost importance, including the hydroxide, nitrate, carbonate, chloride, chlorate, … The chemical symbol for Manganese is Mn. Mass. The chemical symbol for Potassium is K. The atom consist of a small but massive nucleus surrounded by a cloud of rapidly moving electrons. Potassium atoms have 19 electrons and the shell structure is 2.8.8.1.    Crystal Structure, Element Groups: Its extreme rarity in the Earth’s crust, comparable to that of platinum. By mass, oxygen is the third-most abundant element in the universe, after hydrogen and helium. Thorium is a chemical element with atomic number 90 which means there are 90 protons and 90 electrons in the atomic structure. It is the heaviest element that can be formed by neutron bombardment of lighter elements, and hence the last element that can be prepared in macroscopic quantities. Although classified as a rare earth element, samarium is the 40th most abundant element in the Earth’s crust and is more common than such metals as tin. Praseodymium is a soft, silvery, malleable and ductile metal, valued for its magnetic, electrical, chemical, and optical properties. Iridium is a chemical element with atomic number 77 which means there are 77 protons and 77 electrons in the atomic structure. 3. Uranium is weakly radioactive because all isotopes of uranium are unstable, with half-lives varying between 159,200 years and 4.5 billion years. Ruthenium is a chemical element with atomic number 44 which means there are 44 protons and 44 electrons in the atomic structure. Potassium isotopes, mainly K-40 and K-41, are used to study the impact of potassium on the growth of plants and of the human cardiovascular system. The chemical symbol for Rhenium is Re. Main purpose of this project is to help the public learn some interesting and important information about chemical elements, ionizing radiation, thermal engineering, reactor physics and nuclear energy. Thorium is commonly found in monazite sands (rare earth metals containing phosphate mineral). Potassium was first isolated from potash, the ashes of plants, from which its name derives. A colorless, odorless, tasteless noble gas, krypton occurs in trace amounts in the atmosphere and is often used with other rare gases in fluorescent lamps. The chemical symbol for Argon is Ar. The chemical symbol for Xenon is Xe. Carbon is the 15th most abundant element in the Earth’s crust, and the fourth most abundant element in the universe by mass after hydrogen, helium, and oxygen. The chemical symbol for Uranium is U. Cerium is also traditionally considered one of the rare-earth elements. The number of atoms in one gram of 40K is Avogadro's number 6.022 × 1023 (the number of atoms per mole) divided by the atomic weight of potassium-40 (39.96 grams per mole), which is … The chemical symbol for Technetium is Tc. Terbium is a chemical element with atomic number 65 which means there are 65 protons and 65 electrons in the atomic structure. Atomic structure of Potassium includes atomic number, atomic weight, electron configuration Because of its closed-shell electron configuration, its density and melting and boiling points differ significantly from those of most other lanthanides. See also: Atomic Number – Does it conserve in a nuclear reaction? Astatine is the rarest naturally occurring element on the Earth’s crust. Thorium is moderately hard, malleable, and has a high melting point. Carbon is one of the few elements known since antiquity. The chemical symbol for Cerium is Ce. Like all elements with atomic number over 100, nobelium can only be produced in particle accelerators by bombarding lighter elements with charged particles. In nuclear industry gadolinium is commonly used as a neutron absorber due to very high neutron absorbtion cross-section of two isotopes 155Gd and 157Gd. E. Discoverer: De Marignac, Charles Galissard, Discoverer: De Marignac, Jean Charles Galissard, Discoverer: Göhring, Otto and Fajans, Kasimir. Potassium arises from a material called potash lowest among all the elements are listed in order increasing. Are 21 protons and 58 electrons in the atomic structure elements between and! And 69 electrons in the atomic structure, platinum resistance thermometers, dentistry equipment, electrical,,! Of elements reacts with water, aqua regia, and soft enough to be one of only two such that... Liquid air ) boils at 77.4 kelvins ( −195.8°C ) and 10B ( 19.9 % ) 2.8.8.1... 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