The correct order of ONO bond angle in the given species is

Step-by-step solution

For NO ₂^+ , the central nitrogen atom is sp hybridized with no lone pairs, resulting in a linear geometry and a bond angle of 180^ . For NO ₂ , the central nitrogen atom is sp^2 hybridized with one unpaired electron. The repulsion from a single electron is less than that from a bond pair, so the bond angle opens up to be greater than 120^ (approximately 134^ ). For NO ₃^- , the central nitrogen atom is sp^2 hybridized with no lone pairs, resulting in a trigonal planar geometry and a bond angle of exactly 120^ . Fo