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Radium and Promethium Periodic Table
f
Radium
Promethium
Promethium and Radium in Periodic Table
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Periodic Table
Symbol
Ra
Pm
Group Number
2
16
Not Available
Period Number
7
6
Block
s block
f block
Element Family
Alkaline Earth
Lanthanide
CAS Number
7440144
99+
7440122
99+
Space Group Name
Im_ 3m
Not Available
Space Group Number
229.00
1
Not Available
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