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Iridium and Protactinium Periodic Table

Iridium
Protactinium
Protactinium and Iridium in Periodic Table


Periodic Table
Symbol
Ir   
Pa   
Group Number
9   
9
Not Available   
Period Number
6   
7   
Block
d block   
f block   
Element Family
Transition Metal   
Actinide   
CAS Number
7439885   
99+
7440133   
99+
Space Group Name
Fm_ 3m   
I4/mmm   
Space Group Number
225.00   
2
139.00   
8
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