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Barium
Barium

Promethium
Promethium



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Barium
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Promethium

Periodic Table van Barium en Promethium

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Periodiek systeem

Symbool

Ba
Pm

Group Number

23
0 17
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periode Aantal

66
2 7
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Blok

s block
f block

element Family

aardalkali-
lanthanide

CAS-nummer

74403937440122
7429905 54386242
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Space Group Name

Im_ 3m
-

Space Group Number

229,00194,00
11 276
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