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Promethium
Promethium

Chromium
Chromium



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Periodic Table van Promethium en Chromium

Periodiek systeem

Symbool

Group Number

periode Aantal

Blok

element Family

CAS-nummer

Space Group Name

Space Group Number

 
Pm
3
6
f block
lanthanide
7440122
-
194,00
 
Cr
6
4
d block
Transition Metal
7440473
Im_ 3m
229,00