The stability of the following carbanions is | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) The stability of carbanions depends on the hybridization of the carbon atom bearing the negative charge. The order of electronegativity is $sp > s

Vedclass · Accepted Answer

$(a) > (b) > (c) > (d)$

Vedclass · Answer

(A) The stability of carbanions depends on the hybridization of the carbon atom bearing the negative charge. The order of electronegativity is $sp > sp^2 > sp^3$. Higher electronegativity increases the stability of the negative charge.$(a)$ $R-C \equiv C^-$: The negative charge is on an $sp$ hybridized carbon atom.$(b)$ Phenyl carbanion $(C_6H_5^-)$: The negative charge is on an $sp^2$ hybridized carbon atom and is delocalized over the aromatic ring.$(c)$ $R_2C=CH^-$: The negative charge is on an $sp^2$ hybridized carbon atom.$(d)$ $R_3C-CH_2^-$: The negative charge is on an $sp^3$ hybridized carbon atom.Comparing these:- $(a)$ is most stable due to $sp$ hybridization.- $(b)$ is more stable than $(c)$ because the negative charge in $(b)$ is delocalized via resonance in the aromatic ring,whereas in $(c)$ it is only stabilized by the double bond.- $(d)$ is the least stable due to $sp^3$ hybridization and the electron-donating effect of the $R$ groups.Therefore,the correct order of stability is $(a) > (b) > (c) > (d)$.

The stability of the following carbanions is in the order of:

Similar Questions

Which of the following carbocations will be most stable?

The order of decreasing stability of the carbanions is:
$1.$ $(CH_3)_3C^-$
$2.$ $(CH_3)_2CH^-$
$3.$ $CH_3CH_2^-$
$4.$ $C_6H_5CH_2^-$

Which of the following is the most stable form for the given structure after rearrangement?

Which free radical is most stable among the following?

The bond dissociation energy of the $C-H$ bond for the compounds: $(I)\ CH_3-H, (II)\ CH_3-CH_2-H, (III)\ CH_2=CH-CH_2-H, (IV)\ C_6H_5-H$ follows the order:

Vedclass Test Series

Exam Paper Generator

Online Exam Module