Electron Configuration

Front

What is electron configuration?

Back

The distribution of electrons in an atom's orbitals, indicating the energy levels and sublevels occupied by electrons.

Front

What is the Aufbau principle?

Back

A rule stating that electrons occupy the lowest energy orbitals first before filling higher energy levels.

Front

What is the Pauli Exclusion Principle?

Back

A principle stating that no two electrons in an atom can have the same set of four quantum numbers.

Front

What is Hund's Rule?

Back

A rule stating that electrons will fill degenerate orbitals (orbitals of the same energy) singly before pairing up.

Front

What is the electron configuration for Neon (Ne)?

Back

1s² 2s² 2p⁶.

Front

What is the significance of noble gases in electron configuration?

Back

Noble gases have full valence shells, making them stable; they are often used as reference points in shorthand electron configurations.

Front

What is the shorthand electron configuration for Gold (Au)?

Back

[Xe] 6s² 4f¹⁴ 5d¹⁰.

Front

How do you determine the electron configuration of an element?

Back

By using the periodic table to identify the number of electrons and applying the Aufbau principle, Pauli Exclusion Principle, and Hund's Rule.

Front

What is the electron configuration for Iron (Fe)?

Back

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁶.

Front

What is the electron configuration for an ion?

Back

The electron configuration of an ion is determined by adding or removing electrons based on the charge of the ion.