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JEE Advanced2010ChemistryStructure of AtomActual

Assuming that Hund's rule is violated, the bond order and magnetic nature of the diatomic molecule B ₂ is

Options

  1. A1 and diamagnetic
  2. B0 and diamagnetic
  3. C1 and paramagnetic
  4. D0 and paramagnetic

Correct answer

A. 1 and diamagnetic

Step-by-step solution

B ₂ : Total electrons =10 Configuration : 1 s^2 ^* 1 s^2 2 s^2 ^* 2 s^2 2 p_x^1= 2 p_y^1 If Hunds rule is violated, then 1 s^2 ^* 1 s^2 2 s^2 ^* 2 s^2 2 p_x^2= 2 p_y^0 So, diamagnetic Bond order = 6-4 2 =1 Chemical bonding Conceptual II

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