JEE Main201815 Apr 2018Evening ShiftChemistrys Block ElementsActual
In KO ₂ , the nature of oxygen species and the oxidation state of oxygen atom are, respectively:
Options
- ASuperoxide and -1
- BSuperoxide and -1 / 2
- CPeroxide and -1 / 2
- DOxide and -2
Correct answer
B. Superoxide and -1 / 2
Step-by-step solution
In KO ₂ , the nature of oxygen species and the oxidation state of oxygen atom are superoxide (superoxide ion is O ₂⁻ ) and -1 / 2 respectively. Let x be oxidation state of oxygen. The oxidation state of K is +1 . Hence gathered +1+2(x)=0 2 x=-1 x=- 1 2 gathered