# Bromine with 10 electrons

On a test question, my organic chemistry professor gave us a really big molecule and told us to give list the formal charges on each atom. There was a $\ce{Br}$ with 3 lone pairs and a double bond to carbon (which then had a single bond to a $\ce{H}$ and a $\ce{N}$). On the key, he labeled it with a + charge and I was wondering how is that possible (or if it is a mistake)? Shouldn't a $\ce{Br}$ with that many electrons be highly negative or does it go onto the next orbital allowing it to accommodate for this?

• Sounds like a typo to me. Probably should have been two lone pairs, double bond, and positive charge. – jerepierre Apr 28 '15 at 22:25
• It is also highly unlikely, that Br can have 10 electrons. – Martin - マーチン May 13 '15 at 11:04