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Description: Promethium

Element Specifications:
Element Name: Promethium
Element Symbol: 61
Element Number: 61
Element Mass: 145.00000
Element Boiling Point: 0.00 °C
Element Melting Point: 0.00 °C
Element Proton Count: 61
Element Electron Count: 61
Element Neutron Count: 84
Element Density (g/cm³): 6.47500
Element Color (estimate): Unknown

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