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Question

In the transformation, Na(s)Na+(g), the energies involved are:

A
Ionization energy
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B
Sublimation energy
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C
Ionization energy and sublimation energy
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D
Bond dissociation energy
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Solution

The correct option is C Ionization energy and sublimation energy
Na(s)Sublimation−−−−−−Na(g)I.ENa+(g)
First Na(s) is converted into Na(g). Energy required to convert a solid into gas is known as sublimation energy. After converting into gas it is changed into Na+(g). Energy required to remove most loosely bound electron from an isolated neutral gaseous atom is known as ionisation energy.

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