Gallium

Symbol GaAtomic number 31
Atomic mass
69.72
Thermal conductivity
0.406
Atomic radius
1.81
Covalent radius
1.26
Density
5.91
Atomic volume
11.8
Melting point
302.9
Oxidation states
3
Boiling point
2676
Stable isotopes
2
Heat of vapor.
258.7
Electronegativity
1.81
Heat of fusion
5.59
First ionization
5.999
Specific heat
0.37
Electrical conduct.
...
Electron configuration

General descriptionNuclear data
Index

Periodic Table

Chemistry concepts
 
HyperPhysicsR Nave
Go Back





Gallium

Gallium is a blue-gray metal which becomes a silvery liquid at 29.8°C. It has the rather startling property of melting in your hand. Like water, it expands on freezing. It's heat of fusion is 8.04 x 104 J/kg. Its chemistry resembles that of aluminum. It is a rare element and found little use until its properties as a semiconductor were discovered. It is used in the production of light emitting diodes (LEDs).

Gallium has been used as the liquid in high-temperature quartz-tube thermometers, which can be used to over 1200°C.

Certain gallium compounds are excellent semiconductors and have been extensively used in rectifiers, transistors, photoconductors, and laser and maser diodes.

Use in LEDs
Atomic dataNuclear data
Index

Periodic Table

Chemistry concepts

Reference
Pauling
Ch. 28
 
HyperPhysicsR Nave
Go Back







Gallium Nuclear Data

Z
A
Atomic
Mass (u)
Nuclear
Mass(GeV/c2
Binding
Energy(MeV)
Spin
Natural
Abund.
Half-life
Decay
Q
MeV
31
67
66.928204
62.3279
583.41
3/2
...
3.26d
EC
1.00
31
69
68.925580
64.1884
602.00
3/2
0.601
stable
...
...
31
71
70.924701
66.0506
618.96
3/2
0.399
stable
...
...
31
72
71.926365
66.9837
625.48
3
...
13.95h
b-
3.99
Atomic data
Index

Periodic Table

Chemistry concepts

Reference
Rohlf
 
HyperPhysicsR Nave
Go Back