It is impossible for two electrons to have same value of spin quantum number in the same orbital, according to:
Correct answer: C. Pauli's exclusion principle
- A. Hund's rule
- B. Aufbau principle
- C. Pauli's exclusion principle
- D. All of the above options are correct
Explanation
The Pauli Exclusion Principle states that, in an atom or molecule, no two electrons can have the same four electronic quantum numbers. As an orbital can contain a maximum of only two electrons, the two electrons must have opposing spins.
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About Quantum Numbers
Quantum numbers describe an electron's energy level, subshell, orbital orientation and spin. You examine the principal, azimuthal, magnetic and spin quantum numbers, their allowed values, orbital capacity and how they determine electronic configurations and distinguish electrons within an atom.
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