Atomic weight of Potassium is 39.0983 u or g/mol. It may seem, that the space and in fact the matter is empty, but it is not. Boiling point of Potassium in Kelvin is 1032 K. Potassium melting point is 63,7 °C. Nitrogen is a chemical element with atomic number 7 which means there are 7 protons and 7 electrons in the atomic structure. In nuclear industry, especially natural and artificial samarium 149 has an important impact on the operation of a nuclear reactor. Its boiling point is the lowest among all the elements. Discoverer: Priestley, Joseph and Scheele, Carl Wilhelm, Discoverer: Ramsay, William and Travers, Morris, Discoverer: Ramsay, Sir William and Strutt, John (Lord Rayleigh), Discoverer: Del Rio, Andrés Manuel (1801) and Sefström, Nils Gabriel (1830), Discoverer: Lecoq de Boisbaudran, Paul-Émile, Discoverer: Ramsay, Sir William and Travers, Morris, Discoverer: Bunsen, Robert Wilhelm and Kirchhoff, Gustav Robert, Discoverer: Perrier, Carlo and Segrè, Emilio, Discoverer: Reich, Ferdinand and Richter, Hieronymus, Discoverer: Müller von Reichenstein, Franz Joseph, Discoverer: Ramsay, William and Travers, Morris William, Discoverer: Kirchhoff, Gustav and Bunsen, Robert. As the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine. The chemical symbol for Xenon is Xe. The chemical symbol for Argon is Ar. Thorium metal is silvery and tarnishes black when exposed to air, forming the dioxide. This website was founded as a non-profit project, build entirely by a group of nuclear engineers. Phosphorus is a chemical element with atomic number 15 which means there are 15 protons and 15 electrons in the atomic structure. It is fairly obvious that the atoms get bigger as you go down groups. Thallium is a soft gray post-transition metal is not found free in nature. Vanadium is a chemical element with atomic number 23 which means there are 23 protons and 23 electrons in the atomic structure. Tungsten is a chemical element with atomic number 74 which means there are 74 protons and 74 electrons in the atomic structure. Calculate (a) the lattice parameter; and (b) the atomic radius of potassium. Ionic radius, r ion, is the radius of a monatomic ion in an ionic crystal structure. Actinium is a chemical element with atomic number 89 which means there are 89 protons and 89 electrons in the atomic structure. 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. Holmium is a chemical element with atomic number 67 which means there are 67 protons and 67 electrons in the atomic structure. The chemical symbol for Palladium is Pd. The chemical symbol for Uranium is U. Potassium is an alkali metal in group IA of the periodic table with atomic number 19, an atomic weight of 39.102, and a density of 0.86 Mg/m 3. Explain why the atomic radius of hydrogen is so much smaller that the atomic radius for potassium. The chemical symbol for Oxygen is O. The classical description cannot be used to describe things on the atomic scale. The density of potassium, which has the BCC structure, is … Antimony is a lustrous gray metalloid, it is found in nature mainly as the sulfide mineral stibnite. Lutetium is a chemical element with atomic number 71 which means there are 71 protons and 71 electrons in the atomic structure. Note: Learn more about the atomic radius here. Atomic Radius of Potassium. Terbium is a chemical element with atomic number 65 which means there are 65 protons and 65 electrons in the atomic structure. Ask your question. The chemical symbol for Helium is He. Dysprosium is a chemical element with atomic number 66 which means there are 66 protons and 66 electrons in the atomic structure. The atomic radius of a chemical element is a measure of the distance out to which the electron cloud extends from the nucleus. The chemical symbol for Silicon is Si. Pure radium is silvery-white alkaline earth metal. Erbium is a chemical element with atomic number 68 which means there are 68 protons and 68 electrons in the atomic structure. Fermium is a chemical element with atomic number 100 which means there are 100 protons and 100 electrons in the atomic structure. Europium is one of the least abundant elements in the universe. Cobalt is a chemical element with atomic number 27 which means there are 27 protons and 27 electrons in the atomic structure. Tantalum is a chemical element with atomic number 73 which means there are 73 protons and 73 electrons in the atomic structure. Hafnium is a lustrous, silvery gray, tetravalent transition metal, hafnium chemically resembles zirconium and is found in many zirconium minerals. Francium is the second-least electronegative element, behind only caesium, and is the second rarest naturally occurring element (after astatine). The idea is that for a bond A-B, the atomic radius of A added to the atomic radius of B will give a reasonable estimate for the A-B separation in whatever environment. The chemical symbol for Polonium is Po. The chemical symbol for Calcium is Ca. Calcium is an alkaline earth metal, it is a reactive pale yellow metal that forms a dark oxide-nitride layer when exposed to air. It has a face-centered cubic lattice. The chemical symbol for Mendelevium is Md. The atomic radius of a chemical element is a measure of the distance out to which the electron cloud extends from the nucleus. Chemical symbol for Potassium is K. Number of protons in Potassium is 19. D. These elements, along with the chemically similar elements scandium and yttrium, are often collectively known as the rare earth elements. These condensers use tubes that are usually made of stainless steel, copper alloys, or titanium depending on several selection criteria (such as thermal conductivity or corrosion resistance). Antimony is a chemical element with atomic number 51 which means there are 51 protons and 51 electrons in the atomic structure. Melting point of Potassium in Kelvin is 336.53 K. Abundant value of Potassium is 20900 mg/kg. Mercury is a heavy, silvery d-block element, mercury is the only metallic element that is liquid at standard conditions for temperature and pressure. 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 Carbon is C. It is nonmetallic and tetravalent—making four electrons available to form covalent chemical bonds. The chemical symbol for Ytterbium is Yb. Radon is a chemical element with atomic number 86 which means there are 86 protons and 86 electrons in the atomic structure. The chemical symbol for Europium is Eu. 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. Daily dose of potassium for a human body is close to 7 grams, and we receive it mainly from foods like chocolate, nuts, bananas, potatoes, raisins, etc. Elemental sulfur is a bright yellow crystalline solid at room temperature. Only about 5×10−8% of all matter in the universe is europium. The chemical symbol for Arsenic is As. Plutonium is an actinide metal of silvery-gray appearance that tarnishes when exposed to air, and forms a dull coating when oxidized. The chemical symbol for Copper is Cu. The chemical symbol for Cadmium is Cd. The anion with the highest negative charge has the largest radius. Atomic weight of Potassium is 39.0983 u or g/mol. Because of its closed-shell electron configuration, its density and melting and boiling points differ significantly from those of most other lanthanides. But its density pales by comparison to the densities of exotic astronomical objects such as white dwarf stars and neutron stars. For example, the atomic-ionic radius of chlorine (Cl-) is larger than its atomic radius. Discoverer: Marinsky, Jacob A. and Coryell, Charles D. and Glendenin, Lawerence. 1. In fact their absorption cross-sections are the highest among all stable isotopes. The atomic radius of potassium; Body-Centered Cubical Unit Cell: The body-centered cubical unit cell is a unit cell which possesses particles at each corner and at the center of the body. Discoverer: Davy, Sir H. and Thénard, L.-J. Calcium is a chemical element with atomic number 20 which means there are 20 protons and 20 electrons in the atomic structure. A. Tin is a post-transition metal in group 14 of the periodic table. The mention of names of specific companies or products does not imply any intention to infringe their proprietary rights. The chemical symbol for Iridium is Ir. Radium is a chemical element with atomic number 88 which means there are 88 protons and 88 electrons in the atomic structure. (about 243 pm) Rb~Rubidium is right below potassium and has five shells. Zinc is a chemical element with atomic number 30 which means there are 30 protons and 30 electrons in the atomic structure. Hydrogen is a chemical element with atomic number 1 which means there are 1 protons and 1 electrons in the atomic structure. All of its isotopes are radioactive. If n number of potassium atoms must be lined up, then we can write: n×231nm= 2.54×107 nm ⇒ n= 1.10×105 n × 231 n m = 2.54 × 10 7 n m ⇒ n = 1.10 × 10 5 Erbium is a silvery-white solid metal when artificially isolated, natural erbium is always found in chemical combination with other elements. Tellurium is chemically related to selenium and sulfur. The chemical symbol for Lanthanum is La. It is occasionally found in native form as elemental crystals. The chemical symbol for Chromium is Cr. The chemical symbol for Iron is Fe. www.nuclear-power.net. The chemical symbol for Bismuth is Bi. The chemical symbol for Neon is Ne. The atomic radius of Potassium atom is 203pm (covalent radius). Dysprosium is used for its high thermal neutron absorption cross-section in making control rods in nuclear reactors, for its high magnetic susceptibility in data storage applications. The chemical symbol for Francium is Fr. Due to the quantum nature of electrons, the electrons are not point particles, they are smeared out over the whole atom. The chemical symbol for Berkelium is Bk. Like all alkali metals, lithium is highly reactive and flammable, and is stored in mineral oil. Chromium is a steely-grey, lustrous, hard and brittle metal4 which takes a high polish, resists tarnishing, and has a high melting point. (no known atomic radius) Melting point of Potassium is 63,7 °C and its the boiling point is 774 °C. 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. Bismuth is a pentavalent post-transition metal and one of the pnictogens, chemically resembles its lighter homologs arsenic and antimony. It was first isolated from potash, the ashes of plants, from which its name derives. Typical densities of various substances are at atmospheric pressure. Sulfur is a chemical element with atomic number 16 which means there are 16 protons and 16 electrons in the atomic structure. Francium is a highly radioactive metal that decays into astatine, radium, and radon. He electrolyzed dried potassium hydroxide (potash) which he had very slightly moistened by exposing it to the moist air in his laboratory. 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. Palladium, platinum, rhodium, ruthenium, iridium and osmium form a group of elements referred to as the platinum group metals (PGMs). Holmium is a part of the lanthanide series, holmium is a rare-earth element. Beryllium is a hard, grayish metal naturally found in mineral rocks, coal, soil, and volcanic dust. Manganese is a metal with important industrial metal alloy uses, particularly in stainless steels. Rhenium is a silvery-white, heavy, third-row transition metal in group 7 of the periodic table. The radius of the potassium atom is larger because of its smaller nuclear charge. The chemical symbol for Plutonium is Pu. Cerium is a soft, ductile and silvery-white metal that tarnishes when exposed to air, and it is soft enough to be cut with a knife. Cerium is the second element in the lanthanide series. It readily forms hard, stable carbides in alloys, and for this reason most of world production of the element (about 80%) is used in steel alloys, including high-strength alloys and superalloys. Barium is the fifth element in group 2 and is a soft, silvery alkaline earth metal. Xenon is a colorless, dense, odorless noble gas found in the Earth’s atmosphere in trace amounts. Pure germanium is a semiconductor with an appearance similar to elemental silicon. Its physical and chemical properties are most similar to its heavier homologues strontium and barium. 1) You may use almost everything for non-commercial and educational use. The chemical symbol for Ruthenium is Ru. All atoms have a (theoretical) atomic radius, even Potassium. The chemical symbol for Germanium is Ge. Magnesium is a chemical element with atomic number 12 which means there are 12 protons and 12 electrons in the atomic structure. Uranium is a silvery-white metal in the actinide series of the periodic table. 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. Which statement about potassium correctly explains this difference? It must be noted, atoms lack a well-defined outer boundary. It is a lanthanide, a rare earth element, originally found in the gadolinite mine in Ytterby in Sweden. The chemical symbol for Phosphorus is P. As an element, phosphorus exists in two major forms—white phosphorus and red phosphorus—but because it is highly reactive, phosphorus is never found as a free element on Earth. We use cookies to ensure that we give you the best experience on our website. Francium is a chemical element with atomic number 87 which means there are 87 protons and 87 electrons in the atomic structure. atomic radius: The atomic radius is defined as one-half the distance between the nuclei of identical atoms that are bonded together. The chemical symbol for Osmium is Os. Gold is a chemical element with atomic number 79 which means there are 79 protons and 79 electrons in the atomic structure. Potassium is a silvery-white metal that is soft enough to be cut with a knife with little force. 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