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NTA Abhyas JEE Main2020ChemistryChemical Bonding and Molecular StructurePractice

Using MO theory predict which of the following species has the shortest bond length?

Options

  1. AO 2 +
  2. BO 2 -
  3. CO 2 2 -
  4. DO 2 2 +

Correct answer

D. O 2 2 +

Step-by-step solution

Bond length ∝ 1 b o n d order Bond length = no. of bonding e ̄ - no. of antibonding e ̄ 2 Bond orders of O 2 + , O 2 - , O 2 2 - and O 2 2 + are respectively 2.5, 1.5, 1 and 3 Hence O 2 2 + is shortest in bond length as have max .bond order.

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