Thorium

Atomic Structure
Symbol	Th
Atomic Number	90
Atomic Mass	232g/mol
Periodic Table
Group	3
Row / Period	7
Element Category	Transition dhaatu
Chhapa
Thorium ke electron shell

Thorium ek chemical element hae, jiske chemical symbol Th, atomic number 90 aur aomic mass 232 hae . Periodic table me ii uu chemical elements ke group me hae jiske Actinoids bolaa jaae hae.

Chhapa ke gallery

• 
  Monazite, a rare-earth-and-thorium-phosphate mineral is the primary source of the world's thorium
• 
  Monazite - tabular crystal, Rostadheia, Iveland, Norway