Which diagram shows electrons violating the pauli exclusion principle?

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Which diagram shows electrons violating the pauli exclusion principle?

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Pauli exclusionj priniciple states that two electrons cannot have the same quantum state.

These are valid representations:

⇅ ⇅ ↑

⇅ ⇅ ↑ ↑ ↑

⇅ ↑

This is not valid:

⇵ ↑↑ because it shows that the last two electrons occupy the same orbit with the same spin number, which means that both electrons have the same quantitative numbers, in violation of Pauli’s exclusion principle.