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Explain what is wrong with each molecular geometry and provide the correct molecular geometry, given the numbers of lone pairs and bonding groups on the central atom. Match the words in the left column to the appropriate blanks in the sentences on the right. ResetHelp In structure (a), four pairs of electrons give electron geometry. The lone pair would cause lone pair-bonded pair repulsions and would have molecular geometry. In structure (b), five pairs of electrons give electron geometry. The lone pair occupies an equatorial position to minimize lone pair-bonded pair repulsions, and the molecule would have molecular geometry. In structure (c), six pairs of electrons give electron geometry. The two lone pairs would occupy opposite positions to minimize lone pair-lone pair repulsions, and the molecule would have molecular geometry.

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Answer:

Four electron pairs give a tetrahedral geometry. Four electron pairs with one lone pair gives a trigonal pyramidal molecular geometry.

Five electron pairs give a trigonal bipyramidal geometry. Five electron pairs with one lone pair gives a seesaw molecular geometry.

Six electron pairs give octahedral geometry. Six electron pairs with two lone pairs give a square planar geometry.

Explanation:

According to the valence shell electron pair repulsion theory (VSEPR), the molecular shape of any compound depends on the number of electron pairs present in the valence shell of it's central atom; both bonding and non bonding pairs of electrons.

The repulsion between two bonding pairs of electrons on the valence shell is very little compared with the repulsion between a bonding pair and a non bonding pair. The greatest repulsion of electron pairs is found between two non bonding pairs of electrons on the valence shell.

This repulsion that characterizes the presence of non bonding pairs of electrons on the valence shell of the central atom in a molecule usually lead to a distortion of the molecular shape predicted on the basis of the number of electron pairs present. This accounts for the deviation of molecular geometries from each of the expected electron pair geometries in the answer above.

(a). 4 electron pair = Tetrahedral

4 electron pair + 1 lone pair = Trigonal bipyramidal

(b). 5 electron pair = Trigonal bipyramidal

5 electron pair + 1 lone pair = See-saw geometry

(c). 6 electron pair = Octahedral geometry

6electron pair + 2 lone pair = Square planar geometry

The molecular geometry can be predicted with the VSEPR theory. The theory suggests that the bonding, antibonding electrons and the loan pair to the central atom will apply the force to the bonded atoms thereby resulting in the distortion of the molecular geometry.

(a). Four pairs of electrons give electron geometry. The lone pair would cause lone pair-bonded pair repulsions and would have molecular geometry.

The geometry with the four-electron pair = Tetrahedral

The geometry with the four-electron pair and a lone pair = Trigonal bipyramidal

(b). Five pairs of electrons give electron geometry. The lone pair occupies an equatorial position to minimize lone pair-bonded pair repulsions, and the molecule would have molecular geometry.

The geometry with the five-electron pair = Trigonal bipyramidal

The geometry with the five-electron pair and a lone pair = See-saw geometry

(c). Six pairs of electrons give electron geometry. The two lone pairs would occupy opposite positions to minimize lone pair-lone pair repulsions, and the molecule would have molecular geometry.

The geometry with the six-electron pair = Octahedral geometry

The geometry with the six-electron pair and two lone pairs = square planar geometry

For more information about the molecular geometry, refer to the link:

https://brainly.com/question/7558603