Assertion :Formation of an ionic compound will always be an exothermic in nature. Reason: Entropy decrease in the formation of an ionic compound can be compensated only when value of $Δ H$ is higher than $T Δ S$ .

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Formation of an ionic compound is a spontaneous reaction, for reaction to be spontaneous
$Δ G = Δ H - T Δ S$
$↓$ $↓$ $↘$
free energy change enthalpy entropy

$Δ G$ should be negative.

$Δ S = - v e$ as the formation of an ionic compound is more ordered state.

To make $Δ G$ negative, $Δ H$ must be more negative.

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