Which alkane is the least reactive in a free | vedclass

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Question

(A) The reactivity of alkanes towards free radical substitution depends on the stability of the intermediate free radical formed during the reaction.T

Vedclass · Accepted Answer

$CH_4$

Vedclass · Answer

(A) The reactivity of alkanes towards free radical substitution depends on the stability of the intermediate free radical formed during the reaction.The order of stability of free radicals is: $3^\circ > 2^\circ > 1^\circ > 	ext{methyl radical}$.$CH_4$ forms a methyl radical,which is the least stable.$(CH_3)_3CH$ forms a $3^\circ$ radical,which is the most stable.$CH_3CH_2CH_3$ forms a $2^\circ$ radical.$CH_3CH_3$ forms a $1^\circ$ radical.Since the reactivity is directly proportional to the stability of the radical formed,$CH_4$ is the least reactive.

Which alkane is the least reactive in a free radical substitution reaction?

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