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Francium and Protactinium Periodic Table
f
Francium
Protactinium
Protactinium and Francium in Periodic Table
Summary
Periodic Table
Facts
Uses
Physical
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Mechanical
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Periodic Table
Symbol
Fr
Pa
Group Number
1
17
3
15
Period Number
7
7
Block
s block
f block
Element Family
Alkali
Actinide
CAS Number
7440735
18
7440133
99+
Space Group Name
-
I4/mmm
Space Group Number
225.00
3
139.00
11
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