Periodic Table:

Element 72 - Hafnium / Hafnium

(Latin / English)

Mass Number

Atomic Mass

% Abundance

Nuclear Spin

172 *

171.9395

0

0

174

173.9400

0.16

0

175 *

174.9415

0

5/2-

176

175.9414

5.21

0

177

176.9432

18.60

7/2+

178

177.9437

27.30

0

179

178.9458

13.63

9/2

180

179.9465

35.10

0

181 *

180.9491

0

1/2-

182 *

181.9506

0

0

(* = unstable isotope)

Electron Configuration:

[Xe] 4f14 5d2 6s2

Relative Atomic Mass:

178.49

State (25°C, 1 atm):

solid, metal

Density:

13310 kg/m3

Melting Temperature:

2503 K

Boiling Temperature:

5470 K

© W. Bauer, 1999