Electron Configuration & Groups on the Periodic table

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 principal energy level in an electron configuration?

Back

The main energy level of an electron, represented by a number (n) in the configuration, indicating the distance of the electron from the nucleus.

Front

What is Hund's Rule?

Back

A principle stating that electrons will fill degenerate orbitals singly before pairing up, to minimize electron-electron repulsion.

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, meaning an orbital can hold a maximum of two electrons with opposite spins.

Front

What is the Aufbau Principle?

Back

A guideline for determining the electron configuration of an atom, stating that electrons occupy the lowest energy orbitals first before filling higher ones.

Front

What is the electron configuration for Argon?

Back

Front

What is the electron configuration for Silicon?

Back

Front

What is the significance of the periodic table groups?

Back

Elements in the same group have similar chemical properties and the same number of valence electrons.

Front

How many valence electrons does Chlorine have?

Back

7 valence electrons.

Front

What is the electron configuration for Lithium?

Back