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COMEDK2023ChemistryStructure of Atom

The ion that is isoelectronic with CO is

Options

  1. AO ₂⁺
  2. BCN ⁻
  3. CO ₂⁻
  4. DN ₂⁺

Correct answer

B. CN ⁻

Step-by-step solution

CN ⁻ is isoelectronic to CO as they have same number of electrons. Number of electrons in the given species is as follows, aligned & CO =6+8=14 & O ₂⁻=16+1=17 & ~N ₂⁺=14-1=13 & O ₂⁺=16-1=15 & CN ⁻=6+7+1=14 aligned

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