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Promethium Element

Promethium
Atomic Number : 61
Atomic Weight : 145
Boiling Point : 3000oC
Melting Point : 1042oC
Phase at Room Temperature: : Solid
Element Classification: : Metal
Period Number: : 6
Discovered Year: : 1945
Discovered by: : J. A. Marinsky, Lawrence Glendenin and Charles Coryell

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