Gallium is an exceptionally soft metal. Solid gallium can be cut with a simple steel knife. With a melting point of only 29.78°C, the metal will begin to melt even if you will simply hold it in your hand for a longer period of time. Gallium is also an electrically and thermally conductive metal with a relatively high boiling point of 2403°C. It is the 34th most abundant element in the Earth’s crust.
Gallium (chemical symbol Ga) is a semi-precious and relatively rare metal found in small quantities in various household appliances. In electronics, very small amounts of gallium are used to make semiconductors for telephones, computers, and similar devices. Gallium is also widely used in the manufacture of thermometers as a non-toxic alternative to mercury.
Gallium isotopes are used in nuclear medicine to diagnose and treat certain diseases due to their unique nuclear properties. Gallium is used in the manufacture of lasers and various optical devices due to its ability to produce light under certain conditions. Gallium nitride (GaN) and gallium arsenide (GaAs) are widely used in the production of light-emitting diodes (LEDs), which are extensively used in lighting technology. Gallium arsenide is also used in the manufacture of high-efficiency solar cells as well as in the fields of space and specialised industry.
Sources:
https://www.britannica.com/science/gallium
https://en.wikipedia.org/wiki/Gallium
