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Question

Which of the following has sp2-hybridisation?

A
C2H6
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B
C2H5
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C
BeCl2
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D
C2H2
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Solution

The correct option is A C2H5
In C2H6, both carbons have sp3 hybridisation.

In C2H5, both carbons have sp2 hybridisation.

In sp2 hybridization, one s orbital and two p orbitals hybridize to form three sp2 orbitals, each consisting of 33% s character and 67% p character. This type of hybridization is required whenever an atom is surrounded by three groups of electrons.

In BeCl2 (ClBeCl), beryllium has sp hybridisation.

In C2H2, both carbons have sp hybridisation.

Hence, option B is correct.

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