NMR properties:

Magnetogyric Ratio NMR frequency Natural abundance (NA) Nuclear spin (I) Quadrupole moment (Q) Reference sample
70 Ga
70 Ga
31

(L. Gallia, France; also from Latin, gallus, a translation of Lecoq, a cock) Predicted and described by
Mendeleev as ekaaluminum, and discovered spectroscopically by Lecoq de Boisbaudran in 1875, who in
the same year obtained the free metal by electrolysis of a solution of the hydroxide in KOH.
Sources
Gallium is often found as a trace element in diaspore, sphalerite, germanite, bauxite, and coal. Some flue
dusts from burning coal have been shown to contain as much 1.5 percent gallium.
Properties
It is one of four metals -- mercury , cesium , and rubidium -- which can be liquid near room temperature
and, thus, can be used in high-temperature thermometers. It has one of the longest liquid ranges of any
metal and has a low vapor pressure even at high temperatures.
There is a strong tendency for gallium to supercool below its freezing point. Therefore, seeding may be
necessary to initiate solidification.
Ultra-pure gallium has a beautiful, silvery appearance, and the solid metal exhibits a conchoidal fracture
similar to glass. The metal expands 3.1 percent on solidifying; therefore, it should not be stored in glass or
metal containers, because they may break as the metal solidifies.
High-purity gallium is attacked only slowly by mineral acids.
Uses
Gallium wets glass or porcelain and forms a brilliant mirror when it is painted on glass. It is widely used
in doping semiconductors and producing solid-state devices such as transistors.
Magnesium gallate containing divalent impurities, such as Mn+2, is finding use in commercial ultravioletactivated
powder phosphors. Gallium arsenide is capable of converting electricity directly into coherent
light. Gallium readily alloys with most metals, and has been used as a component in low-melting alloys.