Quantum Number

Tags

Chem/Atom

Cegep/2

Word count

124 words

Reading time

1 minute

Simple number that determines the location and behaviour of an electron in the quantum mechanical model

[!abstract] Pauli exclusion principle
Each combination of the four quantum numbers uniquely designates an electron in an atom.

Types

Principal

Determines energy level (size of orbital)

$$n\in {\mathbb{N}}^{\ast }$$

Angular

Determines energy sublevel (shape of orbital)

$$l\in \{0\dots n-1\}$$

• 1 -> $s$
• 2 -> $p$
• 3 -> $d$
• 4 -> $f$

Magnetic

Determines orbital (orientation)

$$m_l\in \{-l\dots l\}$$

Spin

Determines orientation of magnetic moment

$$m_s=\pm \frac{1}{2}$$

[!abstract] Pair electron
One of two electrons with the same quantum numbers except spin

Contributors

Ajitani Hifumi

Changelog

Last edited about 2 hours ago

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