MP3: Three weeks test AP chemistry

Front

What is the correct structure for BF3?

Back

The correct structure for BF3 is trigonal planar, with boron at the center and three fluorine atoms at the corners of a triangle.

Front

What does the resonance structures of C6H6 (benzene) indicate about the bonding?

Back

The resonance structures indicate that all the bonds between the carbon atoms have the same length, suggesting equal bond character.

Front

How many double bonds are present in CCl4?

Back

CCl4 has 0 double bonds.

Front

What is the bond order for the oxygens in the resonance structures of the nitrate ion?

Back

The bond order for the oxygens in the resonance structures of the nitrate ion (NO3-) is 1.5.

Front

What supports the claim that the nitrate ion has three resonance structures?

Back

The statement that the nitrate ion is NOT a polar species supports the claim that it has three resonance structures.

Front

Define resonance in chemistry.

Back

Resonance is a concept used to describe the delocalization of electrons in molecules where the bonding cannot be expressed by a single Lewis structure.

Front

What is a resonance structure?

Back

A resonance structure is one of two or more valid Lewis structures for a molecule that cannot be represented accurately by a single structure.

Front

Explain the significance of bond length in resonance structures.

Back

In resonance structures, bond lengths are averaged, indicating that bonds are neither purely single nor purely double, leading to bond lengths that are intermediate.

Front

What is the molecular geometry of CCl4?

Back

The molecular geometry of CCl4 is tetrahedral.

Front

What is the hybridization of the central atom in BF3?

Back

The hybridization of the central atom (boron) in BF3 is sp2.