Wikipedia

Promethium

Promethium ek chemical element hae, jiske Chemical symbol Pm, atomic number 61 aur atomic mass 145 hae. Ii Lanthanide group ke ek member hae.

Atomic Structure
Symbol Nd
Atomic Number 60
Atomic Mass 144.24 g/mol
Periodic Table
Group 3
Row / Period 6
Element Category Transition dhaatu
Chhapa
Promethium ke electron shell
badlo
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