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). Rhenium is a silvery-white, heavy, third-row transition metal in group 7 of the periodic table. The chemical symbol for Thorium is Th. So even though most argon atoms are more massive than most potassium atoms, all potassium atoms have one more positively charged, massive nuclear particle than does argon. The chemical symbol for Samarium is Sm. The chemical symbol for Tin is Sn. Einsteinium is the seventh transuranic element, and an actinide. Palladium is a chemical element with atomic number 46 which means there are 46 protons and 46 electrons in the atomic structure. These elements, along with the chemically similar elements scandium and yttrium, are often collectively known as the rare earth elements. Niobium is a soft, grey, ductile transition metal, often found in the minerals pyrochlore (the main commercial source for niobium) and columbite. K I Ground State 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 S 1 / 2 Ionization energy 35009.8140 cm-1 (4.3406633 eV) Ref. Bismuth is a chemical element with atomic number 83 which means there are 83 protons and 83 electrons in the atomic structure. The total electrical charge of the nucleus is therefore +Ze, where e (elementary charge) equals to 1,602 x 10-19 coulombs. Lead has the highest atomic number of any stable element and concludes three major decay chains of heavier elements. In nuclear reactors, promethium equilibrium exists in power operation. Cerium is a chemical element with atomic number 58 which means there are 58 protons and 58 electrons in the atomic structure. 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. 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. Potassium is an element in the first group of periodic table and its symbol is K, derived from the Latin word Kalium. The chemical symbol for Potassium is K. Potassium was first isolated from potash, the ashes of plants, from which its name derives. Rhenium is a chemical element with atomic number 75 which means there are 75 protons and 75 electrons in the atomic structure. Neptunium metal is silvery and tarnishes when exposed to air. Symbol: K. Atomic Number: 19. Atomic Number – Does it conserve in a nuclear reaction? The chemical symbol for Titanium is Ti. The chemical symbol for Caesium is Cs. The chemical symbol for Zirconium is Zr. Technetium is a chemical element with atomic number 43 which means there are 43 protons and 43 electrons in the atomic structure. Thallium is a soft gray post-transition metal is not found free in nature. It rarely occurs in its elemental state or as pure ore compounds in the Earth’s crust. It is denoted by the symbol ‘K’. Potassium-39 Please visit the Potassium element page for information specific to the chemical element of the periodic table. The most commonly used spontaneous fission neutron source is the radioactive isotope californium-252. 11) Isotopes have the same atomic number but different mass numbers. The chemical symbol for Neptunium is Np. 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.    Electron Configuration agreement. Thorium is a naturally-occurring element and it is estimated to be about three times more abundant than uranium. Naturally occurring isotopes This table shows information about naturally occuring isotopes , their atomic masses , their natural abundances , their nuclear spins , and their magnetic moments . Platinum is a dense, malleable, ductile, highly unreactive, precious, silverish-white transition metal. Sodium is a chemical element having the atomic number 11 and chemical symbol “Na”. Only about 5×10−8% of all matter in the universe is europium.    Boiling Point See also: Atomic Number – Does it conserve in a nuclear reaction? The chemical symbol for Francium is Fr. Total number of protons in the nucleus is called the atomic number of the atom and is given the symbol Z. 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. Indium is a post-transition metal that makes up 0.21 parts per million of the Earth’s crust. Thorium metal is silvery and tarnishes black when exposed to air, forming the dioxide. The information contained in this website is for general information purposes only. 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