Published by:
CGP EDU Academic Team
Published on: August 13, 2026
In the replacement reaction 
The reaction will be most favourable if 
happens to be
A
Na
B
C
Rb
D
Li
Text Solution
Verified by ExpertsThe correct answer is:
C
Tertiary halide shows 
mechanism i . e ., ionic mechanism. In the given reaction negative ion will attack on carbocation. Thus greater the tendency of ionisation (greater ionic character in 
bond) more favourable will be reaction. The most ionic bond is Rb ‐ F in the given examples thus most favourable reaction will be with 
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