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Radium and Iridium Periodic Table
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Radium
Iridium
Iridium and Radium in Periodic Table
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Periodic Table
Symbol
Ra
Ir
Group Number
2
16
9
9
Period Number
7
6
Block
s block
d block
Element Family
Alkaline Earth
Transition Metal
CAS Number
7440144
99+
7439885
99+
Space Group Name
Im_ 3m
Fm_ 3m
Space Group Number
229.00
1
225.00
2
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