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Francium and Lead Periodic Table


Lead and Francium in Periodic Table


Periodic Table

Symbol
Fr   
Pb   

Group Number
1   
17
14   
4

Period Number
7   
6   

Block
s block   
p block   

Element Family
Alkali   
Post-​Transition   

CAS Number
7440735   
18
7439921   
99+

Space Group Name
Not Available   
Fm_ 3m   

Space Group Number
Not Available   
225.00   
2

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