Which of the following is not the characteristic of ionic solids?
 

1. Very low value of electrical conductivity in the molten state
2. Brittle nature
3. Very strong forces of interactions
4. Anisotropic nature

Hint: Ionic solid generate ions in molten state and show electrical conductivity
Ionic solids easily dissociated into its ions in molten state and show high electrical conductivity. So, statement(a) is incorrect while ionic solids are anisotropic and brittle linked with very strong force of interactions.