Question

Learning task 1 determine what kind of carbon allotropes.

Answer 1

`\huge{\purple{\underline{\underline{\rm{\pink{ANSWER:-}}}}}}`

`\large{\orange{\underline{\underline{\tt{\green{allotropy:-}}}}}}`

• When a solid exists in different crystalline form with a different physical properties is called as allotropy.

• There are basic 5 allotropic form of carbon which are diamond, graphite, fullerene, carbon nanotubes and graphene.

`\large{\red{\underline{\underline{\tt{\blue{1) \: diamond:-}}}}}}`

• In diamond each carbon atom is sp³ hybridized.

• It is hardest natural substance with melting point of 3930°C.

• Diamond is bad conductor of electricity.

`\large{\red{\underline{\underline{\tt{\blue{2) \: graphite:-}}}}}}`

• In graphite each carbon atom is sp² hybridized.

• Layers of graphite are hailed by weak Vander walls force.

• Graphite is soft & slippery in nature.

`\large{\red{\underline{\underline{\tt{\blue{3) \: fullerene:-}}}}}}`

• In fullerene each carbon atom is sp² hybridized.

• Fullerene are made by heating graphite electrodes in presence of inert gas.

• C60 fullerene is the most common type and is also called as buckminister fullerene or Bucky ball.

`\large{\red{\underline{\underline{\tt{\blue{4) \: carbon \: nanotubes:-}}}}}}`

• Carbon nanotubes are cylindrical in shape.

• Carbon nanotubes are robust and can be bent easily.

• They have high electrical conductivity.

`\large{\red{\underline{\underline{\tt{\blue{5) \: graphene:-}}}}}}`

• Isolated layer of graphite is called graphene.

• Graphene sheet is a 2-dimensional solid.