Gold is a chemical element with atomic number 79 which means there are 79 protons and 79 electrons in the atomic structure. Cobalt is a chemical element with atomic number 27 which means there are 27 protons and 27 electrons in the atomic structure. It occurs on Earth as the decay product of various heavier elements. Neptunium metal is silvery and tarnishes when exposed to air. The chemical symbol for Xenon is Xe. Despite its high price and rarity, thulium is used as the radiation source in portable X-ray devices. Thorium is moderately hard, malleable, and has a high melting point. Lanthanoids comprise the 15 metallic chemical elements with atomic numbers 57 through 71, from lanthanum through lutetium. The number of electrons in each element’s electron shells, particularly the outermost valence shell, is the primary factor in determining its chemical bonding behavior. The maximum electrons that can be carried by the sub-shell S is 2, by P is 6, by D is 10, and the F sub-shell can carry 14. The chemical symbol for Silicon is Si. 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. Antimony is a chemical element with atomic number 51 which means there are 51 protons and 51 electrons in the atomic structure. The chemical symbol for Cadmium is Cd. Cerium is the second element in the lanthanide series. The chemical symbol for Molybdenum is Mo. Europium is a moderately hard, silvery metal which readily oxidizes in air and water. The Cookies Statement is part of our Privacy Policy. Silicon is a hard and brittle crystalline solid with a blue-grey metallic lustre, it is a tetravalent metalloid and semiconductor. Rhodium is a chemical element with atomic number 45 which means there are 45 protons and 45 electrons in the atomic structure. is a rare earth element with a metallic silver luster. The chemical properties of this silvery gray, crystalline transition metal are intermediate between rhenium and manganese. It is also sometimes considered the first element of the 6th-period transition metals and is traditionally counted among the rare earth elements. The chemical symbol for Uranium is U. Arsenic occurs in many minerals, usually in combination with sulfur and metals, but also as a pure elemental crystal. There are over 100 different borate minerals, but the most common are: borax, kernite, ulexite etc. Discoverer: Corson, Dale R. and Mackenzie, K. R. The actinide or actinoid series encompasses the 15 metallic chemical elements with atomic numbers from 89 to 103, actinium through lawrencium. Arsenic is a metalloid. Gold is a transition metal and a group 11 element. The elemental metal is rarely found in nature, but once isolated artificially, the formation of an oxide layer (passivation) stabilizes the free metal somewhat against further oxidation. Holmium is a relatively soft and malleable silvery-white metal. Krypton is a member of group 18 (noble gases) elements. 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. Actinium is a chemical element with atomic number 89 which means there are 89 protons and 89 electrons in the atomic structure. Lead is a chemical element with atomic number 82 which means there are 82 protons and 82 electrons in the atomic structure. Nickel is a silvery-white lustrous metal with a slight golden tinge. Oxidation state 0 occurs for all elements – it is simply the element in its elemental form. The chemical symbol for Bromine is Br. The chemical symbol for Zinc is Zn. Gadolinium belongs to a rare earth elements (it is one of a set of seventeen chemical elements in the periodic table). The chemical symbol for Boron is B. The chemical symbol for Cerium is Ce. The subshells have a distinct shape and configuration, in which the electrons move freely. Caesium is a soft, silvery-gold alkali metal with a melting point of 28.5 °C, which makes it one of only five elemental metals that are liquid at or near room temperature. Platinum is one of the least reactive metals. Discoverer: Davy, Sir H. and Thénard, L.-J. The chemical symbol for Sulfur is S. Sulfur is abundant, multivalent, and nonmetallic. An element that is not combined with any other different elements has an oxidation state of 0. Zirconium is mainly used as a refractory and opacifier, although small amounts are used as an alloying agent for its strong resistance to corrosion. Tellurium is far more common in the universe as a whole than on Earth. The chemical symbol for Francium is Fr. The most commonly used spontaneous fission neutron source is the radioactive isotope californium-252. The chemical symbol for Tantalum is Ta. Magnesium is a chemical element with atomic number 12 which means there are 12 protons and 12 electrons in the atomic structure. Oxygen is a colourless, odourless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air. We assume no responsibility for consequences which may arise from the use of information from this website. The chemical symbol for Protactinium is Pa. Protactinium is a dense, silvery-gray metal which readily reacts with oxygen, water vapor and inorganic acids. Similarly, adding electrons results in a negative oxidation state. The chemical symbol for Bismuth is Bi. Atomic Symbol Cd Uses Used in nickel-cadmium batteries. The chemical symbol for Zirconium is Zr. Elemental rubidium is highly reactive, with properties similar to those of other alkali metals, including rapid oxidation in air. Ruthenium is a chemical element with atomic number 44 which means there are 44 protons and 44 electrons in the atomic structure. The most probable fission fragment masses are around mass 95 (Krypton) and 137 (Barium). The chemical symbol for Osmium is Os. Possible oxidation states are +2. Titanium condenser tubes are usually the best technical choice, however titanium is very expensive material. The chemical symbol for Scandium is Sc. Cadmium is a soft, bluish-white metal is chemically similar to the two other stable metals in group 12, zinc and mercury. Helium is a chemical element with atomic number 2 which means there are 2 protons and 2 electrons in the atomic structure. Need an editable periodic table to edit? The chemical symbol for Tellurium is Te. Plutonium is a chemical element with atomic number 94 which means there are 94 protons and 94 electrons in the atomic structure. The chemical symbol for Tin is Sn.

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