Iridium and Cesium Periodic Table
Periodic Table
Symbol
Ir
Cs
Group Number
9
9
1
17
Period Number
6
6
Block
d block
s block
Element Family
Transition Metal
Alkali
CAS Number
7439885
99+
7440462
40
Space Group Name
Fm_ 3m
Im_ 3m
Space Group Number
225.00
2
229.00
1
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