4. Molecular Compounds

Determine if the compound of BCl₂F is polar or nonpolar.

Determine if phosphorus trihydride, PH₃, is polar or nonpolar.

Determine if difluorine selenide, F₂Se, is polar or nonpolar.

Determine if carbon dioxide, CO₂, is polar or nonpolar.

Why is CCl₄ a nonpolar molecule, but is PCl₃ a polar molecule?

Match each of the Lewis structures (a to c) with the correct diagram (1 to 3) of its shape, and name the shape; indicate if each molecule is polar or nonpolar. Assume X and Y are nonmetals and all bonds are polar covalent.

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c.

Match each of the formulas (a to c) with the correct diagram (1 to 3) of its shape, and name the shape; indicate if each molecule is polar or nonpolar.

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a. PBr₃

Predict the shape and polarity of each of the following molecules, which have polar covalent bonds:

a. A central atom with three identical bonded atoms and one lone pair.