Question

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What is Aufbav Principle , Pauli Exclusion Principle?
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Answer 1

Answer:

First, the Pauli exclusion principle lets us know that no two electrons can have the exact same quantum numbers. This means that two electrons in a single orbital must have opposite spins. ... Finally, the Aufbau Principle states that electrons fill lower energy orbitals before moving to higher energy orbitals.

Explanation:

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Answer 2

Answer:

Aufbau (building-up) Principle: Fill the atomic orbitals with electrons starting at the lowest available energy states before filling higher states. Pauli Exclusion Principle: No two electrons can have the same 4 quantum numbers.

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