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

Solid A is very hard, electrical insulator in solid as well as molten

1.	Solid A is very hard, electrical insulator in solid as well as molten state and melts at extremely high temperature. What type of solid is it ?
Answer» SOLUTION :COVALENT Network solid like ` SiO_(2)` (quartz) or SIC or C(diamond).