1.) Part A. Write the two general rules that govern the use of the VESPR model....

1.) Part A. Write the two general rules that govern the use of the VESPR model.

Part B. Write the four guidelines (rules) for applying the VESPR model to all types of molecules.

Expert Solution

Answer:-

Part A:-

1. Effect of lone pairs :-

If a molecule has lone pairs of electrons, it will cause more repulsion that results in the distortion from its regular geometry. For example, CH₄ and H₂O ,

2. Effect of Electronegativity:- If the bonded atom is more electronegative than the central atom , it will cause distortion from the regular geometry. For example, NH₃ and NF₃

Part B

The VSEPR model rules are applied as follows:-

1. The shape of the molecule depends on the repulsion between the lone pairs of electrons present in the valence shell.

2. A lone pair of electrons takes up more space the a bonded pair of electron arround the central atom. So lone pair causes more repulsion than that of bond pair of electron.

3. The repulsion between twon bonded pairs of electrons depends on the electronegativities of bonded atoms.

4. Double bond causes more repulsion than single bond and triple bonds cause more repulsion than a double bond.

queen_honey_blossom answered 1 year ago

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