Question

why is diamond hard? give two uses of diamond..​

Answer 1

Answer:

Diamond is the hardest known natural substance. It is also chemically resistant and has the highest thermal conductivity of any natural material. These properties make it suitable for use as a cutting tool and for other uses where durability is required.

uses

diamonds is uses for making jewellery

Answer 2

Answer:

Diamond is hard because 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.

I hope it helps you..