Periodic Table:

Element 68 - Erbium / Erbium

(Latin / English)

Mass Number

Atomic Mass

% Abundance

Nuclear Spin

162

161.9288

0.14

0

164

163.9292

1.61

0

166

165.9303

33.60

0

167

166.9320

22.95

7/2+

168

167.9324

26.80

0

169 *

168.9346

0

1/2-

170

169.9355

14.90

0

171 *

170.9380

0

5/2-

(* = unstable isotope)

Electron Configuration:

[Xe] 4f12 6s2

Relative Atomic Mass:

167.24

State (25°C, 1 atm):

solid, metal

Density:

9066 kg/m3

Melting Temperature:

1802 K

Boiling Temperature:

3136 K

© W. Bauer, 1999