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Radium
Radium

Polonium
Polonium



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Radium
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Polonium

Periodic Table van Radium en Polonium

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Periodiek systeem

Symbool

Ra
Po

Group Number

216
0 17
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periode Aantal

76
2 7
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Blok

s block
p block

element Family

aardalkali-
post- Transition

CAS-nummer

74401447440086
7429905 54386242
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Space Group Name

Im_ 3m
Pm-3m

Space Group Number

229,00221,00
11 276
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