Question

in which one of the two structure no2+ and no2_ the bond angle has a higher value?

Answer 1

In NO2(+) i.e. nitronium ion N-atom has sp-hybridisation ; so, it adopts linear geometry & O-N-O bond angle is 180 °.

While, in NO2(–) i.e. nitrite ion, N–atom has sp2 hybridisation; so, it adopts bent geometry, for NO2–, actual O-N-O bond angle is 115 ° (yes, it's slightly deviated from expected 120° because of repulsion between the interacting bond pairs and lone pair of electrons.


This is the 'nitronium ion', it clearly shows that O–N–O bond angle in NO2(+) is 180°



And this is the geometry/structure of NO2(–), with 115 N–O–N bond angle.