Question
Which among the following oxoacids of chlorine exhibits +3 oxidation state of chlorine?
MHT CET
Chemistry
p Block Elements (Group 15, 16, 17 & 18)
2026
MHT CET 2026 (19 April Shift 1)
MHT CET Chemistry Question (2026) — Solution
Options
- A. HClO
- B. HClO _2
- C. HClO _3
- D. HClO _4
Answer
B. HClO _2
Step-by-step solution
Let the oxidation state of chlorine be x. In HClO : +1 + x - 2 = 0 x = +1 In HClO _2: +1 + x + 2(-2) = 0 x = +3 In HClO _3: +1 + x + 3(-2) = 0 x = +5 In HClO _4: +1 + x + 4(-2) = 0 x = +7 Chlorine exhibits a +3 oxidation state in HClO _2. Answer: HClO _2
Related: Chemistry — p Block Elements (Group 15, 16, 17 & 18) · All PYQ Banks