The bond angle in $C_2{H}_{4}C\_2H\_4$ is

The chemical bonds present in $C_2{H}_{2}C\_2H\_2$ are

n – butane and isobutane are

The property of an element to exist in two or more physical forms with same chemical properties but different physical properties is called

The hybridisation present in diamond is

The hardest material among these is …………

In diamond each carbon atom has a ……… environment.

Graphite forms ……………. layer structure.

In layer structure of graphite the carbon atoms are in ……. environment.

The hybridisation present in graphite is ………………

The distance between two successive layers of graphite is…………

The use of graphite is ……………

Delocalized n system is present in …….

Graphite is a good conductor of electricity due to ……………

Buckminster fullerene was discovered by ……………