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COMEDK2018ChemistryChemical Bonding and Molecular Structure

Which of the following has the highest bond order?

Options

  1. AN ₂
  2. BO ₂
  3. CHe ₂
  4. DH ₂

Correct answer

A. N ₂

Step-by-step solution

N ₂ [14 electrons ]= 1 s², ^ 1 s², 2 s², ^ * 2 s², 2 p_ x ²= 2 p_ y ², 2 p_ z ² Bond order = N_ b -N_ a 2 [ array l N_ b and N_ a are bonding and anti bonding molecular orbital s - electron array ]= 10-4 2 =3 N ₂ has highest bond order i.e. 3 . While O ₂, He ₂ and H ₂ have 2,0 and 1 / 2 bond order respectively.

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