Dysprosium
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Dysprosium is a chemical element, having the chemical symbol Dy.
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Its atomic number (the number of protons) is 66. It has a Standard Atomic Weight of 162.500(1), and is typically found as a solid in its elemental form.
Dysprosium is considered to be a member of the "Lanthanide" class of elements, has a boiling point of 2,567 °C , and a melting point of 1,413 °C .