Molecules with Electrons Oriented in Four Directions
Four pairs of electrons will orient themselves at about 109 degrees (in three dimensional space). If there are lone pairs, they exert an influence but are not seen in the molecular geometry. Click on the image and drag to rotate the molecules.
What do you think happens to the bond angles between adjacent atoms when lone pairs are present?
|Methane CH4||Ammonia NH3||Water H2O|
|tetrahedral||trigonal pyramidal||angular or bent|
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