NEET2012ChemistryChemical Bonding and Molecular StructureActual
Which is not stable under ambient condition?
Options
- ATiO ₂, Ti ⁺⁴
- BVO , V ⁺⁴
- CVO ₂, ~V ⁺⁵
- DCu ₂ O , Cu ⁺²
Correct answer
D. Cu ₂ O , Cu ⁺²
Step-by-step solution
Copper (I) compounds are unstable in aqueous solution and undergo disproportio-nation. 2 Cu ⁺ Cu ²⁺+ Cu The greater stability of Cu ²⁺ _ (a q .) than Cu ⁺ _ (a q .) is due to much more -v e _ h y d H of Cu ²⁺ _ (a q .) than Cu _ (a q .) ⁺ , which compensates for the second ionisation enthalpy of Cu .