Question

Name the principle, which says that orbital can hold only 2 electrons, and explain.

Answer 1

According to Pauli’s exclusion principle, an orbital contains at most two electrons with the opposite spin (up and down).Because we can have only one electron per quantum state. Spin up and spin down are two different states. A linear combination of the two is not a new independent state. It is obviously formed from the spin up and spin down states.

Answer 2

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