Assertion : Carbanions like ammonia have pyra | vedclass

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(B) carbanion is a species containing a carbon atom with a negative charge and an unshared pair of electrons.In a carbanion,the central carbon atom is

Vedclass · Accepted Answer

If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.

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(B) carbanion is a species containing a carbon atom with a negative charge and an unshared pair of electrons.In a carbanion,the central carbon atom is $sp^3$ hybridized.Due to the presence of three bond pairs and one lone pair,the geometry of the carbanion is pyramidal,similar to ammonia $(NH_3)$.Thus,the Assertion is correct.The carbon atom in a carbanion has $8$ electrons in its valence shell (six from three bonds and two from the lone pair),which completes its octet.Thus,the Reason is also correct.However,the pyramidal shape is due to the $sp^3$ hybridization and the presence of a lone pair,not simply because the carbon has an octet of electrons.Therefore,the Reason is not the correct explanation of the Assertion.

Assertion : Carbanions like ammonia have pyramidal shape.
Reason : The carbon atom carrying negative charge has an octet of electrons.

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Assertion : Carbanions like ammonia have pyramidal shape.Reason : The carbon atom carrying negative charge has an octet of electrons.