Quantum Numbers in Chemistry
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Questions and Answers

According to the Pauli Exclusion Principle, how many electrons can fit in an orbital?

  • Two electrons with opposite spins (correct)
  • Two electrons with the same spin
  • One electron
  • Three electrons

Which quantum number is used to determine the orientation of an orbital within a subshell?

  • Spin quantum number
  • Azimuthal quantum number
  • Principal quantum number
  • Magnetic quantum number (correct)

Which quantum number has integer values between 0 and n-1?

  • Azimuthal quantum number, l (correct)
  • Magnetic quantum number, ml
  • Principal quantum number, n
  • Spin quantum number, ms

According to Hund's Rule, why are electrons singly filled in each orbital before pairing occurs?

<p>To maximize the total spin of the system (B)</p> Signup and view all the answers

According to the Aufbau principle, in which order do electrons occupy orbitals?

<p>Starting from the lowest energy orbitals (B)</p> Signup and view all the answers

How does Hund's Rule affect the spins of electrons in the same subshell?

<p>Electrons in the same subshell have the same spin (D)</p> Signup and view all the answers

What does the spin quantum number, ms, indicate?

<p>Orientation of the spin axis of an electron (D)</p> Signup and view all the answers

In which order are electrons filled in the 3d subshell according to electron configuration principles?

<p>3d, 4s, 4p, 4d (D)</p> Signup and view all the answers

Which quantum number describes the size of an orbital?

<p>Principal quantum number, n (A)</p> Signup and view all the answers

What is the range of values for the magnetic quantum number, ml?

<p>-l to +l (A)</p> Signup and view all the answers

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