Gallium

galio

Gallium melts at only 29 °C, which means that it turns liquid quickly when held in the hand. This element is found in small amounts in zinc and aluminum ores, such as diaspore. El galio puro se aísla cuando se extraen los otros elementos de este mineral. Además, tiene diferentes usos. It is mixed with indium and tin to form a liquid alloy called galinstane, which can be used in thermometers. Gallium is also found in bluray lasers, LEDs and some solar panels.

Summary of properties (Ga)

Atomic weight69.723(1)
Discoverer (year)Lecoq de Boisbaudran, Paul-Émile (1746)
Natural formmetallic solid (orthorombic)
Electron configuration[Ar] 3d10 4s2 4p1
Melting point (ºC)30
Boiling point (ºC)2403
Abundance in earth's crust (ppm)19
Isotope (abundance)69Ga (60.108), 71Ga (39.892)
Density g/cm35.91
Van der Waals radius (pm)187
Covalent radius (pm)123
Electronegativity (Pauling)2.01
Vaporization enthalpy (kJ/mol)254.00
Enthalpy of fusion (kJ/mol)5.59
Specific heat capacity (J/g·K) at 25ºC and 1 atm0.37
Thermal conductivity (W/cm·K) at 25ºC and 1 atm0.410
Oxidation state+3
Electron affinity (eV)0.43
1st Ionization potential (eV)5.9993

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