Indium
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Indium is a chemical element, having the chemical symbol In.
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Its atomic number (the number of protons) is 49. It has a Standard Atomic Weight of 114.818(3), and is typically found as a solid in its elemental form.
Indium is considered to be a member of the "Post-Transition Metal" class of elements, has a boiling point of 2,072 °C , and a melting point of 156.6 °C .