A) RCl, and RBr but not R F or R I
B) -RF, RCl and RBr but not RI
C) RF, RCl, RBr, RI
D) RF, RCl and RI but RBr
Correct Answer: A
Solution :
RCl and RBr can be prepared by free radical halogenation of alkanes while RF and RI cannot be prepared. With \[{{F}_{2}}\], the reaction is not only explosive but also brings cleavage of C?C bonds while with \[{{I}_{2}}\] the reaction is too slow to be of any practical value.
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