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Radium
Radium

Promethium
Promethium



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Promethium

Periodic Table van Radium en Promethium

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Group Number

periode Aantal

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element Family

CAS-nummer

Space Group Name

Space Group Number

 
Ra
2
7
s block
aardalkali-
7440144
Im_ 3m
229,00
 
Pm
3
6
f block
lanthanide
7440122
-
194,00