1.

Ma reacts with RBr best in

Answer»

`C_(2)H_(5)OC_(2)H_(5)`
`C_(2)H_(5)OCH_(3)`
`C_(6)H_(5)N(CH_(3))_(2)`
Equally in all the three

Solution :ALTHOUGH all the three compounds can be used for preparing Grignard REAGENTS, diethyl ether is considered as the bestbecause it provides electron pairs to Mg of the reagent fully for coordination, in caseof `C_(6)H_(5)0CH_(3) and C_(6)H_(5)N(CH_(3))_(2)` electron pair on 0 and N are partialy delocalised over the benzene and HENCE are less AVAILABLE for coordination with Mg.


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