3D molecule viewer: shapes and bond angles
Turn real molecular shapes in 3D: methane, ammonia and water with their lone pairs, through to trigonal bipyramidal and octahedral molecules, plus organic molecules and isomers.
Learn shapes of molecules properly
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Questions students ask
Why is the bond angle in water 104.5°?
Oxygen has four electron pairs: two bonding and two lone pairs. Lone pairs repel more strongly than bonding pairs, squeezing the H–O–H angle below the tetrahedral 109.5°.
What shape is ammonia?
Trigonal pyramidal, with an H–N–H angle of about 107°, because one of nitrogen's four electron pairs is a lone pair.
Free notes on shapes of molecules
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