68
Er
167.26

Erbium

Element density: 9.07 g/cm3
Electron configuration:

[Xe]4f126s2

Oxidation states: +3

Major edges

What are these symbols?
M41453
M51409
N45168
O2329

Minor edges

M12206
M22006
M31812
N1449
N23320
O160

Considerations

Sharp M4,5-edges allow for trace analysis.

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