Class 11 Chemistry simulations · Chemical Bonding and Molecular Structure

VSEPR: shapes of molecules

Choose the numbers of bond pairs and lone pairs around the central atom and see the molecular shape.

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What to notice

Lone pairs take up more room, squeezing bond angles: CH₄ 109.5°, NH₃ 107°, H₂O 104.5°.

Key relation

Repulsion: lone pair–lone pair > lone pair–bond pair > bond pair–bond pair

Try this

Keep four electron pairs and change lone pairs from 0 to 2.

What you can change

• Bond pairs: 2 to 6
• Lone pairs: 0 to 3

More in Chemical Bonding and Molecular Structure

• Dipole moments of molecules
• Hybridisation of carbon
• Molecular orbitals: bond order and magnetism

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