Promethium ek chemical element hae, jiske Chemical symbol Eu, atomic number 63 aur atomic mass 151.96 hae. Ii Lanthanide group ke ek member hae.

Atomic Structure
SymbolEu
Atomic Number63
Atomic Mass151.96 g/mol
Periodic Table
Group3
Row / Period6
Element CategoryTransition dhaatu
Chhapa
Europium ke electron shell
badlo