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BITSAT 2016
Exam
BITSAT
Year
2016
Subject
Chemistry
Chapter
Classification of Elements and Periodicity in Properties

BITSAT 2016 · Chemistry · Classification of Elements and Periodicity in Properties

The decreasing order of the ionization potential of the following...

The decreasing order of the ionization potential of the following elements is

Options

  1. ANe>Cl>P>S>Al>Mg\quad \mathrm{Ne} > \mathrm{Cl} > \mathrm{P} > \mathrm{S} > \mathrm{Al} > \mathrm{Mg}
  2. BNe>Cl>P>S>Mg>Al\quad \mathrm{Ne} > \mathrm{Cl} > \mathrm{P} > \mathrm{S} > \mathrm{Mg} > \mathrm{Al}
  3. CNe>Cl>S>P>Mg>Al\quad \mathrm{Ne} > \mathrm{Cl} > \mathrm{S} > \mathrm{P} > \mathrm{Mg} > \mathrm{Al}
  4. DNe>Cl>S>P>Al>Mg\mathrm{Ne} > \mathrm{Cl} > \mathrm{S} > \mathrm{P} > \mathrm{Al} > \mathrm{Mg}

Correct answer

B. Ne>Cl>P>S>Mg>Al\quad \mathrm{Ne} > \mathrm{Cl} > \mathrm{P} > \mathrm{S} > \mathrm{Mg} > \mathrm{Al}

Step-by-step solution

Closed shell (Ne), half filled (P) and completely filled configuration (Mg) are the cause of higher value of I.E.
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