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Niobium
Niobium

Promethium
Promethium



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Niobium
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Promethium

Niobium and Promethium Periodic Table

Periodic Table

Symbol

Group Number

Period Number

Block

Element Family

CAS Number

Space Group Name

Space Group Number

 
Nb
5
5
d block
Transition Metal
7440031
Im_ 3m
229.00
 
Pm
3
6
f block
Lanthanide
7440122
-
194.00