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Erbium
Erbium

Roentgenium
Roentgenium



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Erbium
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Roentgenium

Erbium and Roentgenium Periodic Table

Periodic Table

Symbol

Group Number

Period Number

Block

Element Family

CAS Number

Space Group Name

Space Group Number

 
Er
3
6
f block
Lanthanide
7440520
P63/mmc
194.00
 
Rg
11
7
d block
-
54386242
-
194.00