[jbrookterrell]

Why is radical bromination more selective than chlorination?

[Jorriss]

Hey.

http://en.wikipedia.org/wiki/Free_radical_halogenation
Scroll down to control of halogenation.

And these two too if necessary.
http://en.wikipedia.org/wiki/Reactivity%E2%80%93selectivity_principle
http://en.wikipedia.org/wiki/Hammond_postulate

[jbrookterrell]

Thanks!