Question

Question #80ef0

Answer 1

The answer is D: di nitrogen tetr oxide

Explanation:

Since nitrogen has many oxides, we need to specify them by using number-prefixes for both nitrogen and oxygen. Usually (but not allways) the mono- (=one)-prefix is omitted.

The nitrogen oxides are:
(the piece between brackets is sometimes omitted)
`N_2O` dinitrogen monoxide
`NO` nitrogen (mon)oxide
`N_2O_3` (di)nitrogen trioxide
`NO_2` nitrogen dioxide
`N_2O_4` (di)nitrogen tetroxide
`N_2O_5` (di)nitrogen pentoxide

`N_2O_4` does not usually occur as a pure substance, as it is in a dynamic equilibrium with `NO_2`:

`N_2O_4harr2NO_2`