alleryWhat gives a qualitative measure of an ionic compound's stability?
AIts count of valence electrons
BIts ionization enthalpy alone
CIts enthalpy of lattice formation
DIts electron gain enthalpy alone
Answer & Solution
Correct answer: C. Its enthalpy of lattice formation
Lattice formation releases enough energy to outweigh the net energy of ion formation, so lattice enthalpy, not just an octet, marks stability.
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