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Niobium
Niobium

Protactinium
Protactinium



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Periodic Table van Niobium en Protactinium

Periodiek systeem

Symbool

Nb
Pa

Group Number

53
0 17
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periode Aantal

57
2 7
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Blok

d block
f block

element Family

Transition Metal
actinide

CAS-nummer

74400317440133
7429905 54386242
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Space Group Name

Im_ 3m
I4 / mmm

Space Group Number

229,00139,00
11 276
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