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Quiz: VSEPR
Draw the Lewis dot structure and predict electronic and molecular structure, bond angle of the following:
Molecule Lewis Dot Structure Electronic geometry
Molecular Geometry
Bond angle
BH3 H−B−H │ H
(remember Boron is an exceptional element, it needs 6 e’s in outermost shell
Trigonal planar
Trigonal planar
120
MgCO3
¨ ¨[Mg]2+ [:O− C==O ]2-
¨ │ ¨ : O :
¨
Trigonal planar
Trigonal planar
120
SO2 ¨ : S==O: │ : O:
¨
Trigonal planar
angular 120
H3O+
¨ [ H−O−H ]+
│ H
Tetrahedral Trigonal pyramidal
109.5
CH2O H −C==O │ H
Trigonal planar
Trigonal planar
120
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