Question

definition of non metal​

Answer 1

Answer:

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$\bigstar$a nonmetal is a chemical element that mostly lacks the characteristics of a metal.

$\bigstar$Physically, a nonmetal tends to have a relatively low melting point, boiling point, and density.

$\bigstar$A nonmetal is typically brittle when solid and usually has poor thermal conductivity and electrical conductivity. 

Answer 2

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substances which are soft and dull, i.e., non-lustrous, non-sonorous, non-ductile, non-malleable and poor conductor of heat and electricity are called non-metals. For example, oxygen, hydrogen, sulphur, etc.