structure is based on trigonal bipyramidal geometry at Sb (5 electron pairs around the central atom). The lone pair goes in an equatorial position, so the structure is a distorted see-saw like SF4. (b) SbCl2+ (18 valence electrons) has a structure based on trigonal planar coordination at Sb (3 electron pairs at Sb). One is a lone pair, so the ... Tetrahedral: four bonds on one central atom with bond angles of 109.5°. Trigonal bipyramidal: five atoms around the central atom; three in a plane with bond angles of 120° and two on opposite ends of the molecule. Octahedral: six atoms around the central atom, all with bond angles of 90°.
Molecular Structure. Answer the following to the best of your ability. Questions left blank are not counted against you. Choose the correct Lewis dot structure and VSEPR geometry of each moleculeElectron geometry-tetrahedral; molecular geometry-bent; bond angle = 109.5° Because of the lone pairs, the bond angle will be less than 109.5°. Draw a Lewis structure for the molecule: has 20 valence electrons. (0 Determine the total number of electron groups around the central atom: There are four electron groups on S.
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