AP Chemistry

What is the molecular geometry of CO₃^2-?

• trigonal planar

• trigonal pyramidal

• tetrahedral

• bent

Which of the following has a zero dipole moment?

• NH₃

• NO₂

• PF₅

• HCN

Which of the following compounds would have the highest lattice energy?

• LiF

• MgCl₂

• CaBr₂

• C₂H₆

Tags

NGSS.HS-PS1-3

What type of structure does the XeOF₂ molecule have?

• trigonal pyramidal

• tetrahedral

• T-shaped

• octahedral

When N, P, and As bond to Cl, what is the correct order of the bonds in terms of increasing polarity?

• N-Cl, P-Cl, As-Cl

• P-Cl, N-Cl, As-Cl

• As-Cl, N-Cl, P-Cl

• As-Cl, P-Cl, N-Cl

Tags

NGSS.HS-PS1-3

The bond angle in H₂Se is about:

• 120°

• 60°

• 180°

• 109°

What is the hybridization of the center carbon atom?

• sp

• sp²

• sp³

• sp⁴

How many sigma and pi bonds are in this molecule?

• 9 sigma, 2 pi

• 7 sigma, 2 pi

• 8 sigma, 1 pi

• 7 sigma, 1 pi

The hybridization of the central atom in NO₃^- is:

• sp

• sp²

• sp³

• dsp³

Would acetone (the chemical above) be soluble in water?

• Yes, because it has a double bond

• Yes, because its center carbon atom is sp² hybridized

• No, because it does not experience hydrogen bonding

• Yes, because it has a permanent dipole moment