Actinium

Actinium ek chemical element hae, jiske chemical symbol Ac, atomic number 89 aur aomic mass 227 hae . Periodic table me ii uu chemical elements ke group me hae jiske Actinoids bolaa jaae hae.

Atomic Structure
SymbolAc
Atomic Number89
Atomic Mass227g/mol
Periodic Table
Group3
Row / Period7
Element CategoryTransition dhaatu
Chhapa
Actinium ke electron shell