alleryOxidation state of Cl in HClO₄ (perchloric acid):
A+5
B+7 (maximum oxidation state of Cl)
C+3
D+1
Answer & Solution
Correct answer: B. +7 (maximum oxidation state of Cl)
HClO₄: H(+1) + Cl(?) + 4 × O(-2) = 0. Cl = +7. Maximum oxidation state for Cl.
**Acid strength order:** HClO < HClO₂ < HClO₃ < HClO₄ (perchloric acid is super-strong).
Keep practising Unit 1C1: Periodic Trends in Atomic Properties
Browse all Unit 1C1: Periodic Trends in Atomic Properties questions for JEE Advanced, or explore more Chemistry topics.
Related questions
Match the formula to its IUPAC nameSort: p-block metal or non-metal?Spot the element that is NOT a noble gasWhich halogen liberates Cl₂ from solution of Cl⁻?PCl₅ in gas phase has shape:Ionization enthalpy comparison: O vs F. The 1st IE of O is LESS than that of N (because O Number of P-O-P bridges in P₄O₁₀:Reaction of XeF₂ with water: