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Francium
Francium

Protactinium
Protactinium



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Francium
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Protactinium

Francium and Protactinium Periodic Table

Periodic Table

Symbol

Fr
Pa

Group Number

13
0 17
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Period Number

77
2 7
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Block

s block
f block

Element Family

Alkali
Actinide

CAS Number

74407357440133
7429905 54386242
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Space Group Name

-
I4/mmm

Space Group Number

225.00139.00
11 276
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