Hafnium

Symbol HfAtomic number 72
Atomic mass
178.49
 Thermal conductivity
0.330
Atomic radius
2.16
 Covalent radius
1.44
Density
13.1
 Atomic volume
13.6
Melting point
2500
 Oxidation states
4
Boiling point
4876
 Stable isotopes
6
Heat of vapor.
575
 Electronegativity
1.3
Heat of fusion
24.06
 First ionization
6.65
Specific heat
0.14
 Electrical conduct.
...
Electron configuration

General descriptionNuclear data
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Hafnium

Hafnium is a transition metal similar to zirconium. Natural zirconium minerals usually contain a few percent of hafnium.

Hafnium was discovered in 1923, but has found little application.

Atomic dataNuclear data
 Index

Periodic Table

Chemistry concepts

Reference
Pauling
 
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Hafnium Nuclear Data

Z
A
Atomic
Mass (u)
Nuclear
Mass(GeV/c2)
Binding
Energy(MeV)
Spin
Natural
Abund.
Half-life
Decay
Q
MeV
72
174
173.940044
161.9886
1404.0
0
0.00162
2x1015y
a
2.50
72
176
175.941405
163.8529
1418.8
0
0.05206
stable
...
...
72
177
176.943217
164.7861
1425.2
7/2
0.18606
stable
...
...
72
178
177.943696
165.7180
1432.8
0
0.27297
stable
...
...
72
179
178.945812
166.6515
1438.9
9/2
0.13629
stable
...
...
72
180
179.946546
167.5837
1446.3
0
0.351
stable
...
...
72
182
181.950550
169.4504
1458.7
0
...
9My
b-
0.37
Atomic data
Index

Periodic Table

Chemistry concepts

Reference
Rohlf
 
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