2026 · Q110
Which among the following are, respectively, the correct oxidation numbers of chloride ion in Cl2O7, Cl2O, ClO3- and ClO2-?
general-sciencechemistry
- A+7, +2, +4, +3
- B+2, −1, −3, +4
- C+7, +1, +3, −3
- D+7, +1, +5, +3
Explanation
In Cl₂O₇: 2x − 14 = 0 → x = +7. In Cl₂O: 2x − 2 = 0 → x = +1. In ClO₃⁻: x − 6 = −1 → x = +5. In ClO₂⁻: x − 4 = −1 → x = +3. The sequence +7, +1, +5, +3 is option D.