Question

Why is diamond known to be the hardest
substances
​

Answer 1

In diamond, these electrons are shared with four other carbon atoms to form very strong chemical bonds resulting in an extremely rigid tetrahedral crystal.

It is this simple, tightly-bonded arrangement that makes diamond one of the hardest substances on Earth...

Answer 2

hey here is your answer :-

Diamond is known to be the hardest substance because -

✨ It is a giant molecule of carbon atom in which each carbon atom is bonded to 4 other carbon atoms forming a rigid three dimensional network structure which is responsible for its hardness .

hope it helps u..☺☺☺♥