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Manipal MET2015ChemistryStructure of Atom

The isoelectronic pair is

Options

  1. ACl ₂ O , ICl ₂⁻
  2. BCl ₂⁻, ClO ₂
  3. CIF ₂⁺, I ₃⁻
  4. DClO ₂⁻, Cl ₂⁺

Correct answer

A. Cl ₂ O , ICl ₂⁻

Step-by-step solution

aligned & Cl ₂ O =2 17+16=42 electrons & ICl ₂⁻=53+2 17+1=88 electrons & Cl ₂⁻=2 17+1=35 electrons aligned aligned & IF ₂⁺=53+2 9-1=70 electrons & ClO ₂=17+2 8=33 electrons & ClO ₂=17+2 8+1=33 electrons & ClO ₂⁻=17+2 8+1=34 electrons & Cl ₂⁺=17+2 9-1=34 electrons aligned ClO ₂⁻ and ClF ₂⁺ contain 34 electrons each. Hence they are isoelectronic.

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