All orbitals of an atom can hold two electrons.

Name: All orbitals of an atom can hold two electrons.
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Quizplus · Accepted Answer

This is correct. According to the Pauli exclusion principle, no two electrons in an atom can have the same set of four quantum numbers. Since each orbital has a unique set of quantum numbers, each orbital can hold a maximum of two electrons with opposite spins.

All Orbitals of an Atom Can Hold Two Electrons