Aufbau Principle and Electron Subshells

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Questions and Answers

According to the Aufbau Principle, in which order do the sublevels fill with electrons?

  • d < f < s < p
  • s < p < d < f (correct)
  • p < s < f < d
  • f < d < p < s

Why does an electron fill a 4s orbital before a 3d orbital?

  • As per the energy level arrangement
  • Following the trend from lower energy to higher energy orbitals (correct)
  • Because the 4s orbital has higher energy than the 3d orbital
  • Due to the overlapping of energy levels

What is the energy order of sublevels, from lowest to highest?

  • p < s < f < d
  • f < d < s < p
  • d < p < s < f
  • s < d < p < f (correct)

Why do electrons fill in the order they do, even if the energy levels are not in order?

<p>As per the Aufbau Principle (C)</p> Signup and view all the answers

Which sublevel has the lowest energy within an energy level?

<p>s (B)</p> Signup and view all the answers

In which order do electrons fill the orbitals according to the Aufbau Principle?

<p>From lowest to highest energy (C)</p> Signup and view all the answers

Why might a 6s orbital fill before a 4f or 5d orbital, even though the energy levels are not in order?

<p>Because of the overlap of energy levels (A)</p> Signup and view all the answers

Which sublevel has more energy, p or d?

<p>d (A)</p> Signup and view all the answers

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