Question

A solid is hard, brittle and electrically non conductor . its melts conduct electricity . what type of solid is it?
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Answer 1

Answer:

Generally, ionic crystals form from a combination of Group 1 or 2 metals and Group 16 or 17 nonmetals or nonmetallic polyatomic ions. Ionic crystals are hard and brittle and have high melting points. Ionic compounds do not conduct electricity as solids, but do conduct when molten or in aqueous solution.

Answer 2

Answer:

Ionic solid

Explaination:

Ionic solids are hard and brittle. Ex. NaCl

Ionic solids conduct electricity in the molten state due to the presence of ions.

But ionic solid acts as an insulator in solid state due to the absence of free ions