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AIIMS 2005
Exam
AIIMS
Year
2005
Subject
Chemistry
Chapter
Structure of Atom

AIIMS 2005 · Chemistry · Structure of Atom

The isoelectronic pair is

The isoelectronic pair is

Options

  1. ACl2O,ICl2−\mathrm{Cl}_2 \mathrm{O}, \mathrm{ICl}_2^{-}
  2. BICl2−,ClO2\mathrm{ICl}_2^{-}, \mathrm{ClO}_2
  3. CIF2+,\mathrm{IF}_2^{+},\mathrm{I}3−_3^{-}
  4. DClO2−,ClF2+\mathrm{ClO}_2^{-}, \mathrm{ClF}_2^{+}.

Correct answer

D. ClO2−,ClF2+\mathrm{ClO}_2^{-}, \mathrm{ClF}_2^{+}.

Step-by-step solution

Number of electrons in ClO2−\mathrm{ClO}_2^{-} =7+6+6+1=20 Number of electrons in ClF2+=7+7+7−1=20\mathrm{ClF}_2^{+}=7+7+7-1=20.
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