Which element of group 13 is a soft metal with a low melting point (303K) and is widely used in doping semiconductors and producing solid-state devices such as transistors?

Question

Question

This question was previously asked in

SSC CGL 2022 Tier-I Official Paper (Held On : 08 Dec 2022 Shift 1)

Answer 1

The correct answer is Gallium.

Key Points

Gallium
- The chemical element gallium has the atomic number 31 and the symbol Ga.
- Gallium is a metal in group 13 of the periodic table and was first discovered by the French chemist Paul-Émile Lecoq de Boisbaudran in 1875. (aluminium, indium, and thallium).
- Gallium is an element that is soft and silvery at ordinary pressure and temperature.
- It turns silvery white when it's liquid. Gallium may fracture conchoidally if excessive force is used.
- Gallium has been commonly utilised to create alloys with low melting points ever since it was discovered in 1875.

Additional Information

Chemical element aluminium has the atomic number 13 and the symbol Al. Aluminum has a density that is around one third that of steel, which is lower than that of most common metals.
Chemical element boron has the atomic number 5 and the letter B in its symbol. It is an amorphous brown powder and a brittle, black, glossy metalloid in its crystalline form.
The chemical element thalium has the atomic number 81 and the letter Tl assigned to it. It is a post-transition grey metal that is not naturally occurring in free form. while segregated.