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Why is it necessary for the spins of two electrons that occupy one orbital, to be in the opposite directions? What is that law called?

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Answer:

The Pauli Exclusion Principle

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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1. Why is it necessary for the spins of two electrons that occupy one orbital, to be in the opposite directions?

  • It is necessary because it explains a varieties of physical phenomena of atoms. One important consequence of this principle is the electron shell structure of atoms and the way atoms share electrons, thus explaining a wide variety of chemical elements and their chemical combinations.
  • It explains the solid state properties of conductors and semi-conductors.
  • It explains the stability of matter in an atom of an element.

2. What is the law called?

Pauli Exclusion Principle.

Pauli Exclusion Principle states that two electrons in an atom of an element in thesame orbital must have opposite spin.

Read more:

What is the pauli exclusion principle and how does it apply to electron configuration?

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