Question

Solid A is a very hard electrical insulator in solids as well as in molten state and melts at extremely high temperature. what type of solid is it ?

Answer 1

Atoms in solid A are bound to each other by covalent bonds. As covalent bonds are really strong, so the solid is hard and melts at extremely high temperature. Even in molten state also it behaves as an insulator because of its covalent nature. Common examples are diamond, quartz.

Answer 2

Answer:

The given properties are the properties of a covalent or network solid. Therefore, the given solid is a covalent or network solid.

Examples of such solids include diamond (C) and quartz (SiO2).