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Polonium
Polonium

Neptunium
Neptunium



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Neptunium

Polonium and Neptunium Periodic Table

Periodic Table

Symbol

Group Number

Period Number

Block

Element Family

CAS Number

Space Group Name

Space Group Number

 
Po
16
6
p block
Post-​Transition
7440086
Pm-3m
221.00
 
Np
3
7
f block
Actinide
7439998
Pnma
62.00