The correct order of electronegativity of carbon in ethane, ethene and ethyne is

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ethane < ethene < ethyne

ethyne < ethene < ethane

ethene < ethyne < ethane

ethene < ethane < ethyne

answer is A.

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Detailed Solution

As we know that, electronegativity ∝%s-character ∝ acidic character Hence, correct order is,ethane < ethene < ethyne.

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