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Francium
Francium
☒

Protactinium
Protactinium
☒



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Protactinium

Francium and Protactinium Periodic Table

Periodic Table

Symbol

Group Number

Period Number

Block

Element Family

CAS Number

Space Group Name

Space Group Number

 
Fr
1
7
s block
Alkali
7440735
-
225.00
 
Pa
3
7
f block
Actinide
7440133
I4/mmm
139.00