The $\mathrm{O}-\mathrm{N}-\mathrm{O}$ bond angles in the nitrate ion,${{\mathrm{NO}}_3}^{-}$ , are best described as being:

In nitrate, there is a single center atom that is encircled by three oxygen atoms that have identical bonds to one another and are positioned at the triangle's angles on the same one-dimensional plane. In essence, nitrate contains no lone pairs and three electron domains. As a result, the ${{\mathrm{NO}}_3}^{-}$ molecule's trigonal planar and slightly bent chemical shape. Bond angle is 120 degrees.