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Q.

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

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a

Lattice energy

b

Ionization energy of Na

c

$Δ H_{E G_{1}}$ of oxygen

d

$Δ H_{E G_{2}}$ of oxygen

answer is A, C.

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Detailed Solution

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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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