Asked by Carolyn

I've been given the formula NH4Br, and I want to make sure I properly separated it into cations and anions. I got NH+1 and Br-1. The only thing is I don't get why NH in the formula is NH4. Where does the four come from?

Answered by bobpursley
NH4 is an ammonium ion. There are four H in the ion.
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