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Canonical static concept record

Ionization energy

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Summary

The minimum energy required to remove an electron from an atom or ion in its ground state, for a specified charge state and final channel.

Record metadata

Canonical name: Ionization energy
Concept ID: ionization_energy
Content version: 2.3.0
Primary field: Chemistry
Fields: Chemistry, Physics
Primary domain: Atomic structure & periodicity
Domains: Atomic structure & periodicity, Atomic & molecular physics
Alternate terminology: No alternate terminology is currently authored for this record.
Concept type: Separation energy

Concept sources

Wikipedia — Ionization energy — Ionization energy · encyclopedic reference · source ID wp-physics-ionization_energy
NIST — Ground states and ionization energies — Atomic Spectra Database: Ground States and Ionization Energies · NIST critically evaluated atomic-data reference · source ID nist-ionization-energy
NIST — Atomic Spectroscopy: An Introduction — Atomic Spectroscopy: An Introduction · NIST technical reference · source ID nist-atomic-spectroscopy

Incoming relations (arrows to this concept)

Each relation below ends at this concept.

Atom Ionization energy

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This is an authored directed relation from the source endpoint to the target endpoint.

Relation ID: atom_to_ionizationenergy
Relation type: State / property description state-description
Direction: source → target
Endpoint roles: source: Has state / property description; target: State / property description of
Authored annotation: first ionization threshold

Authored explanation

A neutral atom has a first ionization energy defined by the minimum ground-state electron-removal channel.

How to interpret this relation type

The target represents a state, property, observable, or state-dependent description associated with the source system or theory.

Relation sources

Wikipedia — Ionization energy — Ionization energy · encyclopedic reference · source ID wp-physics-ionization_energy
NIST — Ground states and ionization energies — Atomic Spectra Database: Ground States and Ionization Energies · NIST critically evaluated atomic-data reference · source ID nist-ionization-energy

Binding energy Ionization energy

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This is an authored directed relation from the source endpoint to the target endpoint.

Relation ID: binding_to_ionization
Relation type: Classification classification
Direction: source → target
Endpoint roles: source: Has subtype; target: Classified as
Authored annotation: electron separation energy

Authored explanation

Ionization energy is an electron-separation binding energy for a specified atom or ion.

How to interpret this relation type

The target is a member or subtype of the broader source class.

Relation sources

Wikipedia — Ionization energy — Ionization energy · encyclopedic reference · source ID wp-physics-ionization_energy
NIST — Ground states and ionization energies — Atomic Spectra Database: Ground States and Ionization Energies · NIST critically evaluated atomic-data reference · source ID nist-ionization-energy

Effective nuclear charge Ionization energy

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This is an authored directed relation from the source endpoint to the target endpoint.

Relation ID: chem_effective_nuclear_charge_to_ionization_energy_describes_governs
Relation type: Describes / governs describes-governs
Direction: source → target
Endpoint roles: source: Describes / governs; target: Described / governed by
Authored annotation: contributes to electron-removal energy

Authored explanation

Effective nuclear attraction is a major contributor to ionization trends together with shell, subshell, correlation, and relaxation effects.

How to interpret this relation type

A theory, law, or interaction describes the behavior of the target within a stated regime. The edge detail must state important limits or qualifications.

Relation sources

Wikipedia — Periodic table — Periodic table · encyclopedic reference · source ID wp-chem-periodic-table
OpenStax — Chemistry 2e — Chemistry 2e · peer-reviewed open textbook · source ID openstax-chemistry-2e
IUPAC — Periodic Table of Elements — Periodic Table of Elements · IUPAC reference table · source ID iupac-periodic-table

Outgoing relations (arrows from this concept)

Each relation below starts at this concept.