Electron configurations

Front

What is an electron configuration?

Back

An electron configuration is 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

The Aufbau principle states that electrons occupy the lowest energy orbitals first before filling higher energy orbitals.

Front

What is Hund's rule?

Back

Hund's rule states that electrons will fill degenerate orbitals (orbitals of the same energy) singly before pairing up.

Front

What is the Pauli exclusion principle?

Back

The Pauli exclusion principle states that no two electrons in an atom can have the same set of four quantum numbers.

Front

How do you determine the electron configuration of an element?

Back

To determine the electron configuration, you fill the orbitals according to the Aufbau principle, Hund's rule, and the Pauli exclusion principle based on the number of electrons.

Front

What is the significance of the noble gas configuration?

Back

Noble gas configuration simplifies the electron configuration notation by using the electron configuration of the nearest noble gas to represent inner shell electrons.

Front

What is the electron configuration for Chlorine (Cl)?

Back

The electron configuration for Chlorine is 1s² 2s² 2p⁶ 3s² 3p⁵.

Front

What is the electron configuration for Magnesium (Mg)?

Back

The electron configuration for Magnesium is 1s² 2s² 2p⁶ 3s².

Front

What is the electron configuration for Iodine (I)?

Back

The electron configuration for Iodine is [Kr] 5s² 4d¹⁰ 5p⁵.

Front

What does an orbital diagram represent?

Back

An orbital diagram visually represents the arrangement of electrons in an atom's orbitals, showing the distribution of electrons among the various orbitals.