BRAINCAKEExpanded Octet Rule
The octet rule and expanded octet rule determine how many valence electrons there are.
In the PCl5 molecule, the central phosphorus atom is bonded to five Cl atoms, thus having 10 bonding electrons and violating the octet rule (trigonal bipyramidal).
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More in Discrete Molecules
- Simple Molecules
- Displayed Formulae
- Dative Covalent Bonds
- Electron Pair Repulsion Theory
- The Shapes of Molecules
- Molecules with Multiple Bonds
- Bond Angles
- Shape and Polarity
All 25 lessons in Discrete Molecules · All Edexcel AS-level Chemistry topics