Chemistry A-Level
Shapes of molecules and ions
What Shapes of molecules and ions means in Chemistry A-Level, as defined for OCR.
Definition of Shapes of molecules and ions
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Reference: OCR
Counting all pairs, bonding and lone, fixes the total arrangement: two pairs give a linear base arrangement, three trigonal planar, four tetrahedral, five trigonal bipyramidal and six octahedral.
Topics that use Shapes of molecules and ions
- Bonding and structure (OCR A-Level)
Related terms
- Anomalous melting and boiling points
- Average bond enthalpy
- Averaging over similar compounds and its limitation
- Bond angles
- bond length and strength
- Bond polarity and lone pairs
- Bond polarity versus molecular polarity
- Comparison of solid, liquid and aqueous states
Using Shapes of molecules and ions in the exam
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