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JEE Advanced2007ChemistryChemical Bonding and Molecular StructureActual

Among the following, the paramagnetic compound is

Options

  1. ANa ₂ O ₂
  2. BO ₃
  3. CN ₂ O
  4. DKO ₂

Correct answer

D. KO ₂

Step-by-step solution

For KO ₂, O ₂⁻ has unpaired e⁻ paramagnetic gathered O ₂⁻ : Total e⁻ s=16+1=17 1 s^2, ^* 1 s^2 2 s^2, ^* 2 s^2, 2 p_z^2 2 p_x¹⁺¹ = 2 p_y¹⁺¹, ^* 2 p_x¹⁺¹= 2 p_y^1 gathered

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