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MHT CET Medical202622 April 2026Evening ShiftChemistryChemical Bonding and Molecular StructureActual

What is the number of bonding and antibonding electrons, respectively, in Li ₂ molecule?

Options

  1. A2 and 4
  2. B3 and 2
  3. C4 and 2
  4. D2 and 3

Correct answer

C. 4 and 2

Step-by-step solution

The atomic number of Lithium ( Li ) is 3 . Total number of electrons in Li ₂ molecule is 6 . The molecular orbital electronic configuration of Li ₂ is _ 1s ² ^ * _ 1s ² _ 2s ² . Number of bonding electrons ( N_b ) = 2 + 2 = 4 . Number of antibonding electrons ( N_a ) = 2 . Therefore, the number of bonding and antibonding electrons are 4 and 2 , respectively. Answer: 4 and 2

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