Exam 4 Test Review

How do you calculate formal charge?

Which two orbitals overlap and form a sigma bond?

• sp and sp²

• sp² and sp³

• s and p

• All of the above

The "better" resonance structure typically has the ​ (a)   formal charge on the ​ (b)   electronegative atom, and ​ (c)   formal charge overall.

• negative
• more
• less
• positive

Which of the following atoms CANNOT hydrogen bond when bonded to an H atom?

• N

• F

• O

• Br

Which two orbitals overlap to form a pi bond?

• sp and sp²

• sp² and sp³

• p and p

• s and s

Molecular geometry focuses on the number of (a)   , and electron geometry focuses on the number of ​ (b)   .

• bonding groups
• bonding groups and lone pairs
• lone pairs

An atom with 3 bonding groups attached to it and one lone pair has a ​ (a)   molecular geometry and a ​ (b)   electron geometry.

• trigonal pyramidal
• tetrahedral
• trigonal bipyramidal
• trigonal planar

An atom with 2 bonding groups attached to it and 2 lone pairs has a (a)   molecular geometry and a ​ (b)   electron geometry.

• bent
• tetrahedral
• linear
• trigonal planar
• seesaw

Rank the strength of these bond types from strongest to weakest.

• Single bond

• Triple bond

• Double bond

Which intermolecular forces (IMFs) are present in the molecule CH₃NH₂. (Hint: try drawing the Lewis structure!)

• Hydrogen bonding, dispersion forces, and dipole-dipole

• Dispersion forces

• Hydrogen bonding

• Dispersion and dipole-dipole forces