pBlock ElementsII 1 Question 4

4. The correct order of the oxidation states of nitrogen in NO, NO2,NO2 and N2O3 is

(2019 Main, 9 April I)

(a) NO2<NO<N2O3<N2O

(b) N2O<NO<N2O3<NO2

(c) O2<N2O3<NO<N2O

(d) N2O<N2O3<NO<NO2

Show Answer

Answer:

Correct Answer: 4. (b)

Solution:

  1. The correct increasing order of oxidation state of nitrogen for nitrogen oxides is

N+12O<N+2O<N+32O3<N+4O2

  • Oxidation state of N in N2O is

2(x)2=0x=+22=+1

  • Oxidation state of N in NO is

x2=0x=+2

  • Oxidation state of N in N2O3 is

2x+3(2)=0x=62=3

  • Oxidation state of N in NO2 is

x+2(2)=0x4=0x=+4



NCERT Chapter Video Solution

Dual Pane