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Protactinium
Protactinium

francium
francium



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Protactinium
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francium

Periodic Table van Protactinium en francium

Periodiek systeem

Symbool

Pa
Fr

Group Number

31
0 17
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periode Aantal

77
2 7
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Blok

f block
s block

element Family

actinide
Alkali

CAS-nummer

74401337440735
7429905 54386242
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Space Group Name

I4 / mmm
-

Space Group Number

139,00225,00
11 276
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