Question

Which of the following are insulators?

Metals, Nonmetals, Metalloids

Answer 1

Metals

• Metals are known to be conductors as they have a maximum number of free electrons present in them.
• The electrons show mobility when electricity is pass through them.

Nonmetals

• Nonmetals are known to be insulators since they can't conduct electricity and heat.
• They are called insulators because they do not have free electrons to move.
• Therefore, on passing the electricity, no mobility of electrons can be seen through them.

Metalloids

• Metalloids are having both the properties of metals as well as nonmetals so they have intermediate conductivity.
• This implies that metalloids are conductive in nature better than non-metals but not as good as metals.

Therefore, Nonmetals are insulators.