Arrange the following compounds in decreasing | vedclass

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(A) The reactivity towards $EAS$ depends on the electron-donating ability of the substituent group attached to the benzene ring.All three groups ($-CH

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$a > b > c$

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(A) The reactivity towards $EAS$ depends on the electron-donating ability of the substituent group attached to the benzene ring.All three groups ($-CH_3$,$-CD_3$,$-CT_3$) exhibit hyperconjugation.The strength of the $C-H$,$C-D$,and $C-T$ bonds follows the order: $C-H Since the $C-H$ bond is the weakest,it is easiest to break,leading to the strongest hyperconjugative effect.Therefore,the electron-donating power via hyperconjugation follows the order: $-CH_3 > -CD_3 > -CT_3$.Consequently,the reactivity towards $EAS$ follows the order: $a > b > c$.

Arrange the following compounds in decreasing order of reactivity towards $EAS$ (electrophilic aromatic substitution).

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