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What are the Pauli Exclusion Principle, Aufbau Principle, and Hunds Rule?

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What are the Pauli Exclusion Principle, Aufbau Principle, and Hunds Rule? They are rules we use to fill electron orbital filling diagrams. Fill from the bottom up, Spread them out before you double up, and always have one up one down in each orbital.

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Electronic configuration of positive and negative ions 

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Electronic configuration of positive and negative ions 

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Electronic configurations of positive and negative ions 

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Electronic configurations of positive and negative ions 

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Q2  Principle to write an electronic configuration 

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Q2  Principle to write an electronic configuration 

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Pauli Exclusion Principle

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Q3 Electronic Configuration Transition Elements

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Q3 Electronic Configuration Transition Elements