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Atomic Number: 31
Atomic Weight: 69.723
Melting Point: 302.91 K (29.76°C or 85.57°F)
Boiling Point: 2477 K (2204°C or 3999°F)
Density: 5.91 grams per cubic centimeter
Phase at Room Temperature: Solid
Element Classification: Metal
Period Number: 4
Group Number: 13
Group Name: none
Gallium has two stable isotopes and both are used in nuclear medicine and physics. Ga-69 is used for production of the radioisotope Ge-68. This isotope is used for so-called Ge-68/Ga-68 generators. The Ga-68 that is created from the decay of Ge-68 is used as a PET isotope. Ga-71 has been used to study the behavior of solar neutrinos and it is also used in NMR studies.
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