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Roentgenium
Roentgenium

Actinium
Actinium



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Roentgenium and Actinium Periodic Table

Periodic Table

Symbol

Rg
Ac

Group Number

113
0 17
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Period Number

77
2 7
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Block

d block
f block

Element Family

-
Actinide

CAS Number

543862427440348
7429905 54386242
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Space Group Name

-
Fm_ 3m

Space Group Number

194.00225.00
11 276
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