BITSAT2021ChemistryChemical Bonding and Molecular StructureActual
Which of the following represents the correct order of Cl - O bond lengths in ClO ⁻, ClO ₂⁻, ClO ₃⁻, ClO ₄⁻ ?
Options
- AClO ₄⁻= ClO ₃⁻= ClO ₂⁻= ClO ⁻
- BClO ⁻ < ClO ₂⁻ < ClO ₃⁻ < ClO ₄⁻
- CClO ₄⁻ < ClO ₃⁻ < ClO ₂⁻ < ClO ⁻
- DClO ₃⁻ < ClO ₄⁻ < ClO ₂⁻ < ClO ⁻
Correct answer
C. ClO ₄⁻ < ClO ₃⁻ < ClO ₂⁻ < ClO ⁻
Step-by-step solution
The b.o in Cl - O ⁻ is 1 The b.o in O = Cl - O ⁻ is 1.5 The b.o. in O = Cl = O is 5 3 =1.66 The b.o. in O = O O | l - O ⁻ is 7 4 =1.75 The bond length increases as b.o. decreases.