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Radium
Radium

Actinium
Actinium



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Actinium

Periodic Table van Radium en Actinium

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Periodiek systeem

Symbool

Ra
Ac

Group Number

23
0 17
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periode Aantal

77
2 7
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Blok

s block
f block

element Family

aardalkali-
actinide

CAS-nummer

74401447440348
7429905 54386242
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Space Group Name

Im_ 3m
Fm_ 3m

Space Group Number

229,00225,00
11 276
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