Name: Thallium
Symbol: Tl
 
Atomic Number: 81
Atomic Weight: 204.3833 g/mol
State: Solid @298K
Colour: Silvery White
 
Melting Point: 577 K
Boiling Point: 1746 K
 
isotope amu abundance(%)
Tl203 202.9719 29.50
Tl205 204.9738 70.50