How electrons fill atomic energy levels to create stable ground states
In short: The Aufbau principle explains how electrons distribute themselves within an atom. This video explores the building-up process that determines the most stable electron configurations in atomic structures.
The Aufbau principle, derived from the German term for building-up, provides a framework for understanding how electrons occupy energy levels in an atom's ground state. Formulated by Danish physicist Niels Bohr around 1920, the principle applies quantum mechanics to describe how electrons interact with the positive charge of the nucleus and the negative charges of other bound electrons.
The concept relies on a hypothetical process where electrons enter an electric field one by one, settling into their most stable conditions. This model is a foundational component of atomic structure and properties, often taught in advanced chemistry curricula to help students master electron configurations.
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Sources
- Summary by Intellect · source: The Aufbau principle | Atomic structure and properties | AP Chemistry | Khan Academy
- Also: Aufbau principle | Atomic Orbitals, Electron Configurations & Pauli Exclusion Principle | Britannica
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