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@hienthanh.cothinggg: #quanjean #quanjeannam #quannam #xuhuongtiktok
Hiền Thanh Clothinggg
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Sunday 11 October 2026 05:47:57 GMT
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Explore molecular shapes and discover how atoms arrange themselves in 3D! Molecular shape depends on the arrangement of bonding and lone electron pairs around atoms. Electron pairs repel one another, influencing the molecule's geometry. * Methane (CH₄): Tetrahedral. Carbon forms four single bonds with hydrogen atoms. The H–C–H bond angle is approximately 109.5°. * Carbon dioxide (CO₂): Linear. Carbon forms two double bonds with oxygen atoms. The O=C=O bond angle is 180°. * Ammonia (NH₃): Trigonal pyramidal. Nitrogen forms three single bonds and has one lone pair. The H–N–H bond angle is approximately 107°. * Ethene (C₂H₄): Planar around each carbon. Each carbon forms three regions of electron density, giving approximately trigonal planar geometry and bond angles near 120°. The molecule is planar. Key concept: Lone pairs repel more strongly than bonding pairs, which helps explain why NH₃ has a smaller bond angle than CH₄. #molecule #geometry #shape #chemistry #concepts
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