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Occurrence of Carbon

a Define allo...

Question

(a) Define allotropy.
(b) Comment on the allotrope of carbon that looks like a football. What is it known as?

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Solution

(a) Allotropy is the phenomenon by which a single element is present in more than one physical form.

(b) Fullerenes are allotropes of carbon which consist of carbon atoms organised in the form of a repeated hexagonal and pentagonal shape. They create a pattern like a football.

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Q. Question 30
Non-metals are usually poor conductors of heat and electricity. They are non-lustrous; non-sonorous; non-malleable and are coloured.
(a) Name a lustrous non-metal.
(b) Name a non-metal which exists as a liquid at room temperature.
(c) The allotropic form of a non-metal is a good conductor of electricity. Name the allotrope.
(d) Name a non-metal which is known to form the largest number of compounds.
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