Organic Compounds Containing Halogens Question 182
Question: The order of reactivity of the given haloalkanes towards nucleophile is:
Options:
A) $ RI>RBr>RCl $
B) $ RCl>RBr>RI $
C) $ RBr>RCl>RI $
D) $ RBr>RI>RCl $
Show Answer
Answer:
Correct Answer: A
Solution:
[a] For a given alkyl group, the order of reactivity is $ \xleftarrow[increasingbondenergy]{R-I>R-Br>R-Cl>R-F} $ decreasing halogen reactivity. This order depends on the carbon-halogen bond energy; the carbon-fluorine bond energy is maximum and thus fluorides are least reactive while carbon-iodine bond energy is minimum hence iodides are most reactive,
BETA
