What is the definition of 'nonmetal'?

Answer 1

Nonmetal is a term used in chemistry. It is a classification for elements that do not exhibit the properties of metals. Nonmetals form molecules and there are only 18 elements in the Periodic Table that are classified as such.

Answer 2

Nonmetals are chemical elements that lack the physical and chemical properties of metals. They are typically poor conductors of heat and electricity, and tend to have lower melting and boiling points compared to metals. Examples of nonmetals include carbon, nitrogen, and oxygen.