give the name for this compound n2o3
Name
Dinitrogen trioxide.
Compound type and naming family
N2O3 contains only nonmetals (nitrogen and oxygen), so the molecular (covalent) naming system applies. Greek prefixes indicate the number of atoms of each element, and the second element receives the “-ide” ending (oxide for oxygen).
Prefix and name assembly
| Formula part | Atom count | Prefix | Name piece |
|---|---|---|---|
| N2 | 2 | di- | dinitrogen |
| O3 | 3 | tri- | trioxide |
The combined name is dinitrogen trioxide. The “oxide” ending is standard for oxygen as the second element, and the vowel combination appears as “trioxide” in common textbook usage.
Visualization
Oxidation-state name
An oxidation-state description is also common: nitrogen(III) oxide. Oxygen has oxidation state \(-2\) in typical oxides, so neutrality gives
\[ 2x + 3(-2) = 0 \;\;\Rightarrow\;\; 2x - 6 = 0 \;\;\Rightarrow\;\; x = +3. \]
Related chemical context
N2O3 is often described as the anhydride of nitrous acid because hydration corresponds to
\[ \mathrm{N_2O_3 + H_2O \rightarrow 2\,HNO_2}. \]
Common pitfalls
- Prefix omission on the first element; “di-” remains because the count for nitrogen is 2.
- “-ide” ending on the second element; oxygen appears as “oxide,” not “oxygen.”
- Confusion with N2O or N2O5; the oxygen count changes the prefix and the name.