Question

name the non- metal which is the hardest known substance.

Answer 1

glass and diamond are non- metal which are the hardest known substance.
hope this will help

Answer 2

Hi friend,


Diamond

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→Diamond is a non metal which is the hardest substance.

→Diamond is made up of carbon atoms which share strong covalent bonds (where electrons are shared between atoms) and are equally spaced in a lattice arrangement.

→Tungsten is a metal which is the hardest substance.

Hope it helps