The law of definite proportions is not applicable to nitrogen oxide because

Options

A. Nitrogen atomic weight is not constant
B. Nitrogen molecular weight is variable
C. Nitrogen equivalent weight is variable
D. Oxygen atomic weight is variable

Answer

C

Explanation

Nitrogen and Oxygen combined to form these oxides :
`N_(2)O `- Nitrous oxide
`NO_(2)` - Nitric oxide
`N_(2)O_(3)` - Dinitrogen trioxide
`N_(2)O_(4) ` - Dintrogen tetraoxide
`N_(2)O_(5)` - Dinitrogen pentaoxide
Valency of nitrogen is variable and hence the equivalent weight. So law of definite proportions will be not applicable.