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Technetium
Technetium

Actinium
Actinium



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Technetium
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Technetium and Actinium Periodic Table

Periodic Table

Symbol

Tc
Ac

Group Number

73
0 17
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Period Number

57
2 7
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Block

d block
f block

Element Family

Transition Metal
Actinide

CAS Number

74402687440348
7429905 54386242
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Space Group Name

P63/mmc
Fm_ 3m

Space Group Number

194.00225.00
11 276
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