NEETChemistryp Block Elements (Group 13 & 14)
Knowing the electron gain enthalpy values for O → O – and O → O 2– as –141 and 702 kJ mol–1 respectively, how can you account for the formation of a large number of oxides having O 2– species and not O – ? (Hint Consider lattice energy factor in the formation of compounds).
Options
- AThe formation of O 2– species is more exothermic.
- BThe lattice energy of O 2– compounds is higher.
- CO 2– ions form more stable compounds.
- DO – ions are less reactive.
Correct answer
A. The formation of O 2– species is more exothermic.
Step-by-step solution
Correct Option is : (A) The formation of O 2– species is more exothermic.