Question

Explain aufbau principle with an example​

Answer 1

Explanation:

The Aufbau principle, simply put, means electrons are added to orbitals as protons are added to an atom. The term comes from the German word "aufbau", which means "built up" or "construction". Lower electron orbitals fill before higher orbitals do, "building up" the electron shell.

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Answer 2

Answer:

The aufbau principle states that in the ground state of an atom or ion, electrons fill atomic orbitals of the lowest available energy levels before occupying higher levels. For example, the 1s shell is filled before the 2s subshell is occupied. ... Aufbau is a German noun that means construction or "building-up".

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