Electronic Configuration of Elements
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Questions and Answers

Why is the electronic configuration of Pd an exception among the elements mentioned?

  • Because it has 4s orbital completely filled
  • Due to the stability of having ns orbital with 0 electrons
  • Due to the presence of 4d orbital in its outermost shell
  • Because of the small energy gap between 4d and 5s orbitals (correct)

    • What is the reason behind the electronic configuration of Cr being 3d5 4s1 instead of 3d4 4s2?

  • Prevention of electron entering the 3d orbitals due to a small energy gap (correct)
  • Large energy difference between 3d and 4s orbitals
  • Presence of completely filled orbitals in the 4s orbital
  • Stability of having half-filled 3d orbitals

    • Why does the electronic configuration of Cu differ from what would be expected based on the general rule?

  • Significant energy difference between ns and (n-1)d orbitals
  • High stability due to the presence of a half-filled 3d orbital (correct)
  • Small energy gap between 3d and 4s orbitals
  • Preferential filling of 4s orbital due to higher energy

    • What property makes half and completely filled sets of orbitals relatively more stable?

    <p>Low energy gap between different sets of orbitals</p> Signup and view all the answers

    In the general electronic configurations of these elements, what does 'n-1' represent?

    <p>Number of electrons in the inner d orbitals</p> Signup and view all the answers

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