Chemical Elements.com - Praseodymium (Pr)

“Basic Information Name: Praseodymium Symbol: Pr Atomic Number: 59 Atomic Mass: 140.90765 amu Melting Point: 935.0 °C (1208.15 K, 1715.0 °F) Boiling Point: 3127.0 °C (3400.15 K, 5660.6 °F) Number of Protons/Electrons: 59 Number of Neutrons: 82 Classification: Rare Earth Crystal Structure: Hexagonal...” (from the page’s text)

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