Isoelectronic
| Also Known As | Isoelectronic species, isoelectronic analogy, iso-valence electronic |
|---|
What is Isoelectronic?
Describes atoms, ions, or molecules that have the same number of electrons and the same electronic configuration. For example, N³⁻, O²⁻, F⁻, Ne, Na⁺, Mg²⁺, and Al³⁺ are all isoelectronic with 10 electrons. Isoelectronic species often have similar properties.
Properties & Characteristics
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
Describes atoms, ions, or molecules that have the same number of electrons and the same electronic configuration. For example, N³⁻, O²⁻, F⁻, Ne, Na⁺, Mg²⁺, and Al³⁺ are all isoelectronic with 10 electrons. Isoelectronic species often have similar properties.
Isoelectronic relationships are used to predict properties of unknown species by analogy to known ones: CF₄ and SiF₄ (both tetrahedral, Group 14), BF₄⁻ and NH₄⁺ (both tetrahedral, same 32e⁻). CO is used as an isoelectronic analogy to N₂ in rationalising its binding to haemoglobin (similar to O₂ bind…
CO's toxicity is partly rationalised by its isoelectronic relationship with N₂ and similarity to O₂ in binding to haem iron — CO binds 200× more strongly than O₂. Understanding isoelectronic analogies helps predict toxicity and reactivity of related species.