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Protactinium
Protactinium

Potassium
Potassium



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Protactinium
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Potassium

Protactinium and Potassium Periodic Table

Periodic Table

Symbol

Pa
K

Group Number

31
0 17
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Period Number

74
2 7
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Block

f block
s block

Element Family

Actinide
Alkali

CAS Number

74401337440097
7429905 54386242
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Space Group Name

I4/mmm
Im_ 3m

Space Group Number

139.00229.00
11 276
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