Which of the following CANNOT be an empirical formula?
-
A.
(CH) -
B.
(CH_{2}) -
C.
(P_{2}O_{5}) -
D.
(N_{2}O_{4})
Correct Answer: Option 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}).