Can you help me with this:
Match the oxidation numbers of nitrogen for the following:
31. NO2
32. No
33. N2O4
34. NO3
35. N3O6

A: +4
B: +2
C: +6

Question

Can you help me with this:
Match the oxidation numbers of nitrogen for the following:
31. NO2
32. No
33. N2O4
34. NO3
35. N3O6

A: +4
B: +2
C: +6

anonymous · Answer

a.+4
b.+2
c.+6

1.NO2=A
2.NO=B
3.N2O4=A
4.NO3=C
5.N3O6=A

anonymous · Answer

Just remember that one atom of oxygen has oxidation no = -2

In every case, let x be the oxidation no of one nitrogen

For 
1)NO2
   x + 2(-2) = 0            // 0 is the total charge of the molecule
   x - 4 = 0
   x=4

2)NO
   x + (-2) = 0
   x=2

3.N2O4

  2(x) + 4(-2) = 0
  2(x) = +8
   x = 4

Rest, you can try by yourself for practice @Pamelaa23

anonymous · Answer

Thank you. So number  4. would be 6 and number 5 would be 2?

anonymous · Answer

The 4th answer is right but the 5 th answer you told is wrong.  Write the equation you formed for the 5th one

anonymous · Answer

Wait, no. Number 5 is 4?

anonymous · Answer

Sorry,  yes.  @Pamelaa23 , number 5 is 4 :)