The<unk>  ion with the partial charges shown The ion is the conjugate base of nitric acid, consisting of one central nitrogen atom surrounded by three identically bonded oxygen atoms in a trigonal planar arrangement. The<unk>  ion carries a formal charge of −1. This charge results from a combination formal charge in which each of the three oxygens carries a − charge, whereas the nitrogen carries a +1 charge, all these adding up to formal charge of the polyatomic<unk>  ion. This arrangement is commonly used as an example of resonance. Like the isoelectronic carbonate ion, the<unk>  ion can be represented by resonance structures: Canonical resonance structures for the<unk>  ion
Nitrate
Bromide
Haloalkane
Phosphine
Saline 
Alcohols 
Phosphate
Gluten