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Neptunium
Neptunium

Promethium
Promethium



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Neptunium
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Promethium

Neptunium and Promethium Periodic Table

Periodic Table

Symbol

Group Number

Period Number

Block

Element Family

CAS Number

Space Group Name

Space Group Number

 
Np
3
7
f block
Actinide
7439998
Pnma
62.00
 
Pm
3
6
f block
Lanthanide
7440122
-
194.00