Question

why are ionic compounds generally hard crystallite solids

Answer 1

Because ionic compounds are formed by alternating positive and negative ions, and because they are all held together with these strong electrostatic forces, the oppositely charged ions pack tightly with each other and form a crystal lattice structure that is extremely hard to break.

Answer 2

$Hey..$

Here is your answer...

Ionic compounds are generally hard and crystalline solids because they are bind together with a force if attraction that acts between electons .

The attraction exerted by the oppositely charged ions bind them together and make them more rigid.

Hope it helps.