Question

why diamond is hard?​

Answer 1

Answer:

The heat and pressure causes the diamonds molecules to change so that they're so close together, the molecules can't move (known as covalent bonding). The closeness of these molecules forms a rigid bond, therefore making the diamond hard.

Answer 2

GOOD AFTERNOON FRIEND,

The heat and pressure causes the diamonds molecules to change so that they're so close together, the molecules can't move (known as covalent bonding). The closeness of these molecules forms a rigid bond, therefore making the diamond hard.

HOPE IT HELPS.....

AND WISHING YOU AN ADVANCED HAPPY

RAKSHABANDHAN