When two electrons occupy the same orbital they have paired spins-that is,the spins are opposite in direction.

Name: When two electrons occupy the same orbital they have paired spins-that is,the spins are opposite in direction.
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Question

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Electrons in the same orbital must have opposite spins due to the Pauli exclusion principle, which states that no two electrons can have the same set of quantum numbers within an atom.

When Two Electrons Occupy the Same Orbital They Have Paired