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In case of replacement reaction the rea...

In case of replacement reaction the reaction will be most favourable if M happens to be-

A

K

B

Rb

C

Li

D

Na

Text Solution

Verified by Experts

The correct Answer is:
B
For a particular alkyl halide, reactivity of the alkali metal fluorides increases gradually from Li to Cs because their ionisation enthalpies decrease and their electronegativities increase. Therefore, for the given reaction, if M = Rb, then the reaction becomes most favourable.
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