JEE Main Chemistry question

Which has the largest distance between the carbon and hydrogen atom?

(A)EthaneCorrect
(B)Ethene
(C)Ethyne
(D)Benzene

Answer: (A)

Solution

C–H bond length decreases as the s-character of the carbon's hybrid orbital increases: ethane's carbon is (25% s-character, longest C–H bond), ethene and benzene have carbons (33% s-character,

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Question ID VK-133398