Q- 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?
Answer- Solid A is a Covalent network solid.
Reasons-
- Covalent network solids are very high electrical insulators in both solid as well as molten states. This is because their molecules are bonded covalently to each other and do not have any free electrons.
- Covalent network solids are very hard.
- Covalent network solids have a very high melting point, as the molecules are covalently arranged and require a high amount of heat to make them break down. Hence, they melt at an extremely high temperature.
- For Example- quartz, silicon carbide, diamond, etc.
Class 12th Important Questions
- Ionic Solids Conduct Electricity in Molten State but not in Solid state. Explain
- Why do solids have a definite volume
- Why are solids rigid?
Students Also Asks
Solid a is a very hard electrical insulator in solid as well as in molten state and melts at extremely high temperature
Solid A is a Covalent network solid this is because due to covalently arranged molecules these solids have a very hard electrical insulator in solid as well as in molten state and melt at extremely high temperature.
Which type of solids are very hard electrical insulator in solid as well as molten state and melt at extremely high temperature?
Covalent Network solids are very hard electrical insulators in solid as well as molten states and melt at extremely high temperatures. Because of its chemical properties, the molecules of covalent network solids are covalently arranged so, that there are no free electrons.