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Sharing Electrons

Part of the Structure and Bonding section of Coddy's Chemistry journey. Lesson 8 of 49.

Non-metals share electron pairs. A shared pair is a covalent bond, drawn as a line.

H2 with one bond line, and Cl2 with one bond line and three lone pairs on each Cl

H₂ and Cl₂: one shared pair each

Hydrogen is full with 2 electrons; most other atoms with 8 (the octet).

Pairs not shared are lone pairs, drawn as dots. Bonded atoms make a molecule.

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Challenge

Chlorine gas is made of Cl₂ molecules. Draw its Lewis structure: the bond and every lone pair.

Try it yourself

Lewis boardDraw the Lewis structure of Cl2
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This lesson includes a short quiz. Start the lesson to answer it and track your progress.

All lessons in Structure and Bonding

1Ionic Bonding

Why Atoms BondForming IonsThe Ionic BondIonic FormulasPolyatomic IonsIonic LatticesRecap - Salt Factory

4Polarity

Electronegativity and BondsPolar and Non-polar BondsIonic or CovalentPolar MoleculesWhen Dipoles CancelRecap - Dipole Hunt

7Functional Groups

Carbon ChainsStructural FormulasAlcoholsCarboxylic AcidsEsters and EthersAldehydes, Ketones, AminesRecap - Group Finder

2Covalent Bonds

Sharing ElectronsCounting Valence ElectronsDrawing Lewis StructuresDouble and Triple BondsLone PairsFormal ChargeLewis Structures of IonsRecap - Molecule Builder

5Forces Between Molecules

London ForcesDipole-Dipole ForcesHydrogen BondsBoiling PointsLike Dissolves LikeRecap - Boiling Contest

8Practice Problems

Recap - Polar Bonds SurveyRecap - Pigments and HexaneRecap - Butanol and EtherRecap - Dots on an Oxide

3Shapes of Molecules

Electron GroupsLinear and Trigonal PlanarTetrahedral MoleculesPyramids and Bent MoleculesBond AnglesRecap - Shape Detective

6Metals and Giant Structures

Metallic BondingDiamond and GraphiteGiant Covalent StructuresFour Kinds of SubstanceRecap - Material Match