Erbium ek chemical element hae, jiske Chemical symbol Er, atomic number 68 aur atomic mass 167.26 hae. Ii Lanthanide group ke ek member hae.

Atomic Structure
Symbol Er
Atomic Number 68
Atomic Mass 167.26 g/mol
Periodic Table
Group 3
Row / Period 6
Element Category Transition dhaatu
Chhapa
Erbium ke electron shell
badlo