Which of the following intermediate has the complete octet around the carbon atom?
Correct answer: B. Carbanion
- A. Free radical
- B. Carbanion
- C. Carbonium ion
- D. None of these
Explanation
In a carbanion carbon is bonded to three atoms or groups (trivalent) and has eight electrons(octet). It is an electron rich species. It is sp3 hybridized where one of the hybrid orbits has a lone pair of electrons. It has pyramidal geometry.
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About Nucleophilic Substitution
Nucleophilic substitution replaces a leaving group in an alkyl halide when an electron-rich nucleophile attacks the carbon atom. The topic compares SN1 and SN2 mechanisms, including reaction conditions, substrate structure, solvent effects, nucleophile strength, carbocation formation and stereochemical changes, and distinguishes substitution from elimination.
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