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Lead and Protactinium Periodic Table


Protactinium and Lead in Periodic Table


Periodic Table

Symbol
Pb   
Pa   

Group Number
14   
4
Not Available   

Period Number
6   
7   

Block
p block   
f block   

Element Family
Post-​Transition   
Actinide   

CAS Number
7439921   
99+
7440133   
99+

Space Group Name
Fm_ 3m   
I4/mmm   

Space Group Number
225.00   
2
139.00   
8

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