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Exam 9: Chemical Bonding II: Molecular Geometry and Bonding Theories

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Question 61

Multiple Choice

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According to the VSEPR model, a molecule with the general formula AB₂ with two lone pairs on the central atom will have a ________ molecular geometry.

A) linear
B) bent
C) trigonal planar
D) tetrahedral
E) seesaw

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Question 62

Multiple Choice

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Which one of the following molecules is nonpolar?

A) NH₃
B) OF₂
C) CH₃Cl
D) H₂O
E) BeCl₂

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Question 63

Multiple Choice

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A molecule with the formula AB₄ and a square planar molecular geometry uses ________ to form its σ bonds.

In one sentence state how molecular orbitals are usually obtained.

In the valence bond treatment, overlap of an s orbital on one atom with an sp³ orbital on another atom gives rise to a σ bond.

What is the predicted molecular geometry of the CH₄ molecule according to the VSEPR model?

Using the VSEPR model, predict the molecular geometry around the central atom in SO₃^2-.

The bond angles in the H₃O⁺ ion are

What is the molecular geometry of ClO₃F as predicted by the VSEPR model?

What is the molecular geometry of NOCl as predicted by the VSEPR model?

What is the predicted molecular geometry of the H₂O molecule according to the VSEPR model?

What is the total number of electron domains around the central atom for a molecule having a square planar molecular geometry, such as XeBr₄?

Which is the most reasonable prediction for the H-C-H bond angle in CH₄?

According to the VSEPR model, which molecule is predicted to be linear?

What is the hybridization on the central atom in NO₃^-?

When molecules that exhibit separation of charges are placed in an electric field, they become oriented positive end to negative plate and negative end to positive plate.

A molecule with the formula AB₄ and a tetrahedral molecular geometry uses ________ to form its σ bonds.

For different structural arrangements of atoms having the formula XeF₂Cl₂, which structures represent polar molecules? (Black = Xe, Yellow = F, Green = Cl)

Pi bonds are covalent bonds in which the electron density is concentrated above and below the plane of the nuclei of the bonding atoms.

According to the VSEPR model, the predicted molecular geometry of SiCl₄ is