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Technetium
Technetium

Erbium
Erbium



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Technetium and Erbium Periodic Table

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Periodic Table

Symbol

Tc
Er

Group Number

73
0 17
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Period Number

56
2 7
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Block

d block
f block

Element Family

Transition Metal
Lanthanide

CAS Number

74402687440520
7429905 54386242
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Space Group Name

P63/mmc
P63/mmc

Space Group Number

194.00194.00
11 276
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