The number of sp^2-hybridised carbon atoms in | vedclass

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(A) The given structure is $HC\equiv C-CH_2-C(=O)-CH_2-CH=CH_2$.To determine the hybridisation of carbon atoms,we count the number of sigma bonds and

Vedclass · Accepted Answer

$3$

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(A) The given structure is $HC\equiv C-CH_2-C(=O)-CH_2-CH=CH_2$.To determine the hybridisation of carbon atoms,we count the number of sigma bonds and lone pairs (if any) around each carbon atom:$1$. $HC\equiv C-$: Both carbons are $sp$-hybridised (two sigma bonds).$2$. $-CH_2-$: Both $CH_2$ groups are $sp^3$-hybridised (four sigma bonds).$3$. $-C(=O)-$: The carbonyl carbon is $sp^2$-hybridised (three sigma bonds).$4$. $-CH=CH_2$: Both carbons are $sp^2$-hybridised (three sigma bonds each).Counting the $sp^2$-hybridised carbons: one from the carbonyl group and two from the terminal alkene group,total = $1 + 2 = 3$.Therefore,the number of $sp^2$-hybridised carbon atoms is $3$.

The number of $sp^2$-hybridised carbon atoms in $HC\equiv C-CH_2-CO-CH_2-CH=CH_2$ is

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