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Lead and Francium Periodic Table


Francium and Lead in Periodic Table


Periodic Table

Symbol
Pb  
Fr  

Group Number
14  
4
1  
17

Period Number
6  
7  

Block
p block  
s block  

Element Family
Post-​Transition  
Alkali  

CAS Number
7439921  
99+
7440735  
18

Space Group Name
Fm_ 3m  
-  

Space Group Number
225.00  
3
225.00  
3

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