H

Hybridisation

sp, sp², sp³ hybridisation; s-p mixing: σ-framework geometry
Quick Reference
Formula / Notationsp, sp², sp³ hybridisation; s-p mixing: σ-framework geometry
Also Known AsOrbital hybridisation (British), hybridization (American), sp³/sp²/sp hybridisation

What is Hybridisation?

The concept in valence bond theory describing the mixing of atomic orbitals to form new hybrid orbitals of equivalent energy for bonding. Types include sp (linear), sp² (trigonal planar), and sp³ (tetrahedral). Hybridization explains molecular geometry and bond angles.

Formula & Notation

sp, sp², sp³ hybridisation; s-p mixing: σ-framework geometry

Other Names / Synonyms: Orbital hybridisation (British), hybridization (American), sp³/sp²/sp hybridisation

Properties & Characteristics

Hybridisation is the mathematical mixing of atomic orbitals of similar energy on the same atom to form a new set of equivalent hybrid orbitals with the same energy and different spatial orientation. sp³ hybridisation (4 equivalent tetrahedral orbitals from 1s + 3p), sp² (3 trigonal planar orbitals + 1 unhybridised p, from 1s + 2p), sp (2 linear orbitals + 2 unhybridised p, from 1s + 1p). Hybridisation theory explains molecular geometry and bond angles.

Uses & Applications

Hybridisation rationalises molecular geometries: methane (sp³, 109.5°), ethylene (sp², 120°), acetylene (sp, 180°), and explains the bonding in aromatic systems (sp²), metal carbenes, and main group compounds. It is used in predicting reactivity, NMR chemical shifts, and IR active vibrations.

Safety Information

No direct safety concern. Hybridisation determines geometry, which affects pharmacological activity and toxicity (e.g., sp² flat compounds intercalate DNA more readily than sp³ compounds). Understanding hybridisation helps rationalise the reactivity and hazard of functional groups.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Hybridisation
Formula sp, sp², sp³ hybridisation; s-p mixing: σ-framework geometry
Synonyms Orbital hybridisation (British), hybridization (American), sp³/sp²/sp hybridisation

Frequently Asked Questions

The concept in valence bond theory describing the mixing of atomic orbitals to form new hybrid orbitals of equivalent energy for bonding. Types include sp (linear), sp² (trigonal planar), and sp³ (tetrahedral). Hybridization explains molecular geometry and bond angles.

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