Platinum
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Platinum is a chemical element, having the chemical symbol Pt.
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Its atomic number (the number of protons) is 78. It has a Standard Atomic Weight of 195.078(2), and is typically found as a solid in its elemental form.
Platinum is considered to be a member of the "Transition metal" class of elements, has a boiling point of 3,825 °C, and a melting point of 1,768.4 °C .
Platinum is also considered a precious metal and is used as a catalyst in many chemical reactions.