Periodic Table van Radium en Kobalt
Periodiek systeem
Symbool
Ra
Co
Group Number
2
16
9
9
periode Aantal
7
4
Blok
s block
d block
element Family
aardalkali-
Transition Metal
CAS-nummer
7440144
99+
7440484
38
Space Group Name
Im_ 3m
P63 / mmc
Space Group Number
229,00
1
194,00
5
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