Noble Gas Core Notation and Orbital Diagrams

Vocabulary and electronic configurations based on Noble Gas Core Notation and Orbital Diagram rules.

Noble Gas Core Notation

A method that shortens long configurations by using bracketed Group 18 symbols to represent the preceding noble gas core.

Calcium (Full Notation)

$$1s^{2} 2s^{2} 2p^{6} 3s^{2} 3p^{6} 4s^{2}$$

Calcium (Noble Gas Core Notation)

$$[Ar] 4s^{2}$$

Sodium Configuration

$$[Ne] 3s^{1}$$

Argon Configuration

$$[Ne] 3s^{2} 3p^{6}$$

Carbon Configuration

$$[He] 2s^{2} 2p^{2}$$

Zinc Configuration

$$[Ar] 3s^{2} 3p^{6} 4s^{2} 3d^{10}$$

Boxes (Orbital Diagrams)

The components of an orbital diagram that represent atomic orbitals.

Arrows (Orbital Diagrams)

Representations used to show electron spin, indicated by up and down directions.

Hund's Rule

A rule stating that parallel arrows should be spread across boxes first.