The chemical symbol for Ruthenium is Ru. Promethium is a chemical element with atomic number 61 which means there are 61 protons and 61 electrons in the atomic structure. Thallium is a chemical element with atomic number 81 which means there are 81 protons and 81 electrons in the atomic structure. The chemical symbol for Silicon is Si. Thulium is a chemical element with atomic number 69 which means there are 69 protons and 69 electrons in the atomic structure. The chemical symbol for Astatine is At. All of its isotopes are radioactive. The first alloy used on a large scale was bronze, made of tin and copper, from as early as 3000 BC. Mercury is a heavy, silvery d-block element, mercury is the only metallic element that is liquid at standard conditions for temperature and pressure. The chemical symbol for Chromium is Cr. The chemical symbol for Cobalt is Co. Cobalt is found in the Earthâs crust only in chemically combined form, save for small deposits found in alloys of natural meteoric iron. Being a typical member of the lanthanide series, europium usually assumes the oxidation state +3. It is also the most corrosion-resistant metal, even at temperatures as high as 2000 °C. 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. [Xe] 6s2 for barium). Nickel is a chemical element with atomic number 28 which means there are 28 protons and 28 electrons in the atomic structure. Approximately 60â70% of thallium production is used in the electronics industry. Gold is thought to have been produced in supernova nucleosynthesis, from the collision of neutron stars. Lawrencium is a chemical element with atomic number 103 which means there are 103 protons and 103 electrons in the atomic structure. The chemical symbol for Oxygen is O. Beryllium is a chemical element with atomic number 4 which means there are 4 protons and 4 electrons in the atomic structure. Titanium is a chemical element with atomic number 22 which means there are 22 protons and 22 electrons in the atomic structure. The chemical symbol for Magnesium is Mg. Magnesium is a shiny gray solid which bears a close physical resemblance to the other five elements in the second column (group 2, or alkaline earth metals) of the periodic table: all group 2 elements have the same electron configuration in the outer electron shell and a similar crystal structure. The chemical symbol for Scandium is Sc. The chemical symbol for Phosphorus is P. As an element, phosphorus exists in two major formsâwhite phosphorus and red phosphorusâbut because it is highly reactive, phosphorus is never found as a free element on Earth. Discoverer: Scientists at Dubna, Russia (1964)/Albert Ghiorso et. The chemical symbol for Tantalum is Ta. The chemical properties of the atom are determined by the number of protons, in fact, by number and arrangement of electrons. Thorium is commonly found in monazite sands (rare earth metals containing phosphate mineral). Entire website is based on our own personal perspectives, and do not represent the views of any company of nuclear industry. Neptunium is the first transuranic element. Under standard conditions, it is the lightest metal and the lightest solid element. The chemical symbol for Osmium is Os. Tin is a chemical element with atomic number 50 which means there are 50 protons and 50 electrons in the atomic structure. Copper is a chemical element with atomic number 29 which means there are 29 protons and 29 electrons in the atomic structure. The chemical symbol for Zirconium is Zr. A freshly exposed surface of pure copper has a reddish-orange color. 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 ârare-earth elementâ.
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