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10. Which explains the filling up of the orbital in the order of increasing energy?A. Octet RuleB. Hund’s RuleC. Pauli’s ExclusionD. Aufbau Principle

Question

  1. Which explains the filling up of the orbital in the order of increasing energy?A. Octet RuleB. Hund’s RuleC. Pauli’s ExclusionD. Aufbau Principle
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Solution

The correct answer is D. Aufbau Principle. The Aufbau Principle states that electrons occupy the lowest energy levels first. This means that the 1s orbital is filled first, then the 2s orbital, then the 2p, and so on. This principle explains the filling up of the orbital in the order of increasing energy.

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