${\rm{I}}{{\rm{P}}_2}$ for an element is invariably higher than ${\rm{I}}{{\rm{P}}_1}$ because:

The size of cation is smaller than its atom

It is difficult to remove ‘$e$’ from cation

Effective nuclear charge is more for cation

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JEE CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

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\mathrm{I}{\mathrm{P}_2}

for an element is invariably higher than

\mathrm{I}{\mathrm{P}_1}

because:

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Correct option: D

All of the above

Option D (All of the above) is correct because the size of the cation is smaller, it's more difficult to remove an electron, and the effective nuclear charge is greater.

JEE CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

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