Question

Explain following - Hinds rules, Aufbau principle.​

Answer 1

The Aufbau Principle states that lower energy orbitals fill before higher energy orbitals. ... Hund's Rule states that if 2 or more degenerate (i.e. same energy) orbitals are available, one electron goes into each until all of them are half full before pairing up.

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Answer 2

Answer:

Aufbau Principle: lower energy orbitals fill before higher energy orbitals.

Hund's Rule: one electron goes into each until all of them are half full before pairing up.

Explanation:

The Aufbau Principle states that lower energy orbitals fill before higher energy orbitals. For example, the orbitals in the n=1 energy level will fill up before the orbitals in the n=2 energy level.

Hund's Rule states that if 2 or more degenerate (i.e. same energy) orbitals are available, one electron goes into each until all of them are half full before pairing up . You may have heard this one in relation to the analogy of filling seats in a bus; everyone finds their own seat, and only when all the seats are half full do they start sitting together.

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