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Ionization Enthalpy

The numerical...

Question

The numerical value of ionization energy of a unipositive ion is approximately equal to_________

IP value of neutral atom.

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EA value of neutral atom.

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IP value of dipositive ion.

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EA value of dipositive ion.

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Solution

The correct option is D EA value of dipositive ion.
Ionization energy of unipositive ion means removing electron from unipositive ion.

$X^{+} - e^{-} \to X^{+ +}$

And electron affinity means electron added to dipositive ion
$X^{+ +} + e^{-} \to X^{+}$

Option D is correct.

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