Gallium Element in Periodic Table | Atomic Number Atomic Mass
Gallium is an element in the thirteenth group and fourth period of periodic table and it has the symbol Ga and atomic number 31. Gallium is a soft, silvery metal and thus has similarities to the other metals of the group, aluminum, indium and thallium. It does not occur as a free element in nature; rather, it exists in trace amounts in zinc ores and in bauxite. Gallium contains 31 isotopes, ranging in mass number from 56 to 86, but only two of these isotopes, 69Ga and 71Ga are stable which occur naturally.
Gallium Element Uses:
- Gallium is used in electronic circuits, semiconductors and light-emitting diodes (LEDs).
- It is also useful in high-temperature thermometers, barometers, pharmaceuticals and nuclear medicine tests.
- Gallium nitride is also used as semiconductor. It is used in Blu-ray technology, mobile phones, blue and green LEDs and pressure sensors for touch switches.
- Gallium bonds easily with most metals and is particularly used to make low-melting alloys.
Gallium Element Information:
Discovery year: 1875
Discovered by: Lecoq de Boisbaudran
Atomic number: 31
Relative atomic mass: 69.723
Electron configuration: [Ar] 3d10 4s2 4p1
Other elements in the same block:
Boron, Carbon, Nitrogen, Oxygen, Fluorine, Neon, Aluminium, Silicon, Phosphorus, Sulfur, Chlorine, Argon, Germanium, Arsenic, Selenium, Bromine, Krypton, Indium, Tin, Antimony, Tellurium, Iodine, Xenon, Thallium, Lead, Bismuth, Polonium, Astatine, Radon, Nihonium, Flerovium, Moscovium, Livermorium, Tennessine and Oganesson are the same block elements.
Period: period 4
Other elements in the same period:
Group: group 13 (boron group)
Other elements in the same group:
Other elements in the same orbital:
Key isotopes: 69Ga
Melting point: 29.7646°C, 85.5763°F, 302.9146 K
Boiling point: 2229°C, 4044°F, 2502 K
Element category: post-transition metal
Density (g cm−3): 5.91
CAS number: 7440-55-3
Color: silvery blue
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