Which of the following CANNOT be an empirical formula?
- \(CH\)
- \(CH_{2}\)
- \(P_{2}O_{5}\)
-
\(N_{2}O_{4}\)
The correct answer is: D
Explanation
The empirical formula is always in the ratio of the smallest positive integer, hence, \(N_{2}O_{4}\) has an empirical formula \(NO_{2}\).