Holmium and Erbium Periodic Table
Periodic Table
Symbol
Ho
Er
Group Number
Not Available
Not Available
Period Number
6
6
Block
f block
f block
Element Family
Lanthanide
Lanthanide
CAS Number
7440600
29
7440520
35
Space Group Name
P63/mmc
P63/mmc
Space Group Number
194.00
5
194.00
5
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