A) +1
B) +2
C) +3
D) -3
Correct Answer: B
Solution :
Key Idea: The sum of oxidation state of all atoms in a molecule is zero. Suppose oxidation state of S in \[\text{N}{{\text{a}}_{\text{2}}}{{\text{S}}_{\text{2}}}{{\text{O}}_{\text{3}}}\]is \[x,\] \[N{{a}_{2}}{{S}_{2}}{{O}_{3}}\] \[\therefore \] \[(2x+1)+2x+(-2\times 3)=0\] or \[2+2x-6=0\] or \[2x=+\,4\] \[\therefore \] \[x=+\,2\]You need to login to perform this action.
You will be redirected in
3 sec