The H-C-H angle in ethane is 120^o , while in ethyne it is 180^o. Give reason.

Dear Student,

Please find below the solution to the asked query:

C atom in ethane is sp³ hybridised and all the four H-C-H bond angles are 109.5^o.
C atom in ethene is sp² hybridised and the  H-C-H bond angle  is 120^o.
C atom in ethyne is sp hybridised and the H-C-H bond angle is 180^o.

Kindly refer to the following link:
https://www.meritnation.com/ask-answer/question/explain-hybridisation-between-ethene-and-ethyne/the-s-block-elements/9640229

Please check your question, I think it is ethene instead of ethane.

Hope this information will clear your doubts about bond angles in ethene and ethyne.

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