JEE CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

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Arrange the elements

\mathrm{Se}, \mathrm{Cl}

and

\mathrm{S}

in the increasing order of ionisation energy

View answer and explanation

Correct option: B

\mathrm{Se} < \mathrm{S} < \mathrm{Cl}

Option B (

\mathrm{Se} < \mathrm{S} < \mathrm{Cl}

) is correct because ionization energy generally increases across a period and decreases down a group.

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