Which of the following is a metalloid?

Question

Question

This question was previously asked in

NTPC CBT-I (Held On: 30 Dec 2020 Shift 1)

Answer 1

The correct answer is Silicon.

Key Points

The elements that show properties that are intermediate between metals and non-metals are called metalloids.
Metalloid lies at the borderline between metals and non-metals
Metalloids have nonmetallic chemical properties in general.
Metalloids are usually too brittle to have any structural uses
Examples of metalloids are.
- Boron.
- Silicon.
- Germanium.
- Arsenic.
- Antimony.
- Tellurium.
- Polonium.

Important Points

Silicon is a chemical element atomic number 14.
- Silicon is mainly used in computer chips as it is a semiconductor.
- Silicon in silicones can be used as a waterproof sealant on roofs, around water pipes.
- It was discovered by Jons Jacob Berzelius in 1823.
- Silicon was named by Thomas Thomson in 1817.

Additional Information

Bromine is a chemical element atomic number 35.
- Bromine is a nonmetal in group 17.
Lead is a chemical element atomic number 82.
- Lead is a metal in Group 14
Gold is a chemical element atomic number 79.
- Gold is a transition metal and a group 11 element.