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Protactinium
Protactinium

Gadolinium
Gadolinium



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Periodic Table van Protactinium en Gadolinium

Periodiek systeem

Symbool

Pa
Gd

Group Number

30
0 17
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periode Aantal

76
2 7
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Blok

f block
f block

element Family

actinide
lanthanide

CAS-nummer

74401337440542
7429905 54386242
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Space Group Name

I4 / mmm
P63 / mmc

Space Group Number

139,00194,00
11 276
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