×

Polonium
Polonium

Promethium
Promethium



ADD
Compare
X
Polonium
X
Promethium

Polonium and Promethium Periodic Table

Periodic Table

Symbol

Po
Pm

Group Number

163
0 17
👆🏻

Period Number

66
2 7
👆🏻

Block

p block
f block

Element Family

Post-​Transition
Lanthanide

CAS Number

74400867440122
7429905 54386242
👆🏻

Space Group Name

Pm-3m
-

Space Group Number

221.00194.00
11 276
👆🏻