In the formation of $N a_{2} O$ which of the following energies will be released?

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Ionization energy of Na

$Δ H_{E G_{1}}$ of oxygen

$Δ H_{E G_{2}}$ of oxygen

Lattice energy

answer is A, C.

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Detailed Solution

Formation of lattice is an exothermic process. Ionization of all atoms is endothermic in nature. First electron gain enthalpy of oxygen is negative i.e., exothermic nature. Second electron gain Enthalpy is always positive, thus it is an endothermic process.

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