Chemistry A-Level
σ-bond formation by direct orbital overlap
What σ-bond formation by direct orbital overlap means in Chemistry A-Level, as defined for OCR.
Definition of σ-bond formation by direct orbital overlap
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Reference: OCR
A σ-bond is formed when orbitals on the two bonding atoms overlap directly along the line joining the nuclei, giving a region of electron density concentrated between the atoms.
Topics that use σ-bond formation by direct orbital overlap
- Alkanes (OCR A-Level)
Related terms
- Bond angle of about 109.5°
- Consequences for alkane reactivity
- Distinguishing σ-bonds from π-bonds
- Effect of branching on boiling point
- Effect of carbon-chain length on boiling point
- Electron pair repulsion between bonding pairs
- Free rotation about σ-bonds
- Further substitution giving polyhalogenated products
Using σ-bond formation by direct orbital overlap in the exam
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