The order of reactivity of Phenyl Magnesium Bromide with the following compounds is:
(II)>(III)>(I)
(I)>(III)>(II)
(II)>(I)>(III)
All react with the same rate
A
(II)>(III)>(I)
B
(I)>(III)>(II)
C
All react with the same rate
D
(II)>(I)>(III)
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Solution
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Nucleophile attacks the most electrophilic site first. Among aldehyde and a ketone, aldehydes are more electrophilic as in ketones the + charge on carbonyl carbon is decreased by +I effect of both alkyl groups.
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