Quantum Mechanical Model Review

A collection of vocabulary terms and definitions related to the Quantum Mechanical Model.

Quantum Mechanical Model

A model that describes the behavior of electrons in atoms using principles of quantum mechanics.

Orbital

A region in an atom where there is a high probability of finding electrons.

S-orbital

A spherical orbital that can hold a maximum of 2 electrons.

P-orbital

An orbital shape that consists of three separate lobes, allowing for a maximum of 6 electrons.

D-orbital

An orbital with a more complex shape that can accommodate up to 10 electrons.

F-orbital

The most complex orbital with 7 variations, capable of holding up to 14 electrons.

Aufbau Principle

A principle stating that electrons fill orbitals starting from the lowest energy level to the highest.

Pauli's Exclusion Principle

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

Hund's Rule

A rule stating that electrons must fill each orbital singly before pairing up in any orbital.

Electron Configuration

A notation that shows the arrangement of electrons in an atom's orbitals.

Carbon Configuration

The electron configuration of carbon is 1s² 2s² 2p².

Chromium Configuration

The electron configuration of chromium is [Ar] 3d⁵ 4s².

Silver Configuration

The electron configuration of silver is [Kr] 4d¹⁰ 5s¹.