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In which of the following compounds the carbon marked with asterisk is expected to have greatest positive charge?
(i) ^{\ast}CH_{3} -CH_{2}-Cl
(ii) ^{\ast}CH_{3} -CH_{2}-Mg^{+}Cl^{-}
(iii) ^{\ast}CH_{3} -CH_{2}-Br
(iv) ^{\ast}CH_{3} -CH_{2}-CH_{3}

Answers (1)

The answer is the option (i) ^{\ast}CH_{3} -CH_{2}-Cl

Explanation: Order of electronegativity is as follows: Cl > Br > C > Mg. The more electronegative group attached to the C will give a more positive charge. Therefore, in (i) case, asterisk C will have the greatest positive charge.

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