Element X produces a pollutant oxide Y. Y may be oxidised again to form Z. Two students gave the statements below. Student P: ‘The molecule of Y contains lone pairs of electrons.’ Student Q: ‘The oxidation number of X increases by 1 from Y to Z.’ X could be carbon or nitrogen or sulfur. Which student(s) made a correct statement?
- AP only
- BQ only
- Cboth P and Q
- Dneither P nor Q