extremely random question - please help?

[md2b9886]

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Ok so like the title said, this is extremely random. I need help on how to calculate electronegativity differences. I know that obviously when you have something like HCl you just subtract one EN value from the other, but what do you do when you have something like CH3Br since there are 3 elements involved? I know this is really stupid, but please help if you can!!

Thanks!

 

[xrevision]

This isn't a place where you get answers to homework questions. Try google.

 

[bozz]

Ask the same question in the MCAT Study Q & A forum. Tons of people will help.

Just don't say it's homework.. make sure to say its from some MCAT book 😉