Answer:
Same in all compounds
Explanation:
We know that
mass percentage of N = [mass of N/ mass of compound] ×100
In NO2, N% = 14/(14+32)×100
= 14/46×100
= 30.43%
In, N2O4, N% = 28/(28+64) ×100 = 28/92×100 =30.43%
Similarly, in N3O6 also the % of N = 30.43%
So, percentage of Nitrogen is same in all given compound. That is 30.43%
