Question

1.7 Solid A is a very hard electrical insulator in solid as well as in molten state
and melts at extremely high temperature. What type of solid is it?
1.8 Ionic solids conduct electricity in molten state but not in solid state. Explain.​

Answer 1

Answer:

1.7) that solid must have strong covalent bond such as diamond

1.8) because in molten state ions are free to move in solution but it is not possible in solid state