When there are two electrons in the same orbital, they have:

A Same spin
B Opposite spin
C Same or opposite spin
D No spin

Correct Answer: Opposite spin

When there are two electrons in the same orbital, they have opposite spins. The Pauli exclusion principle states that there can only be a maximum of two electrons for every one orientation, and the two electrons must be opposite in spin direction; meaning one electron has ms=+21 and the other electron has ms=−21.
Bissoy MCQ
#General Knowledge #Chemistry

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