¹H nuclei located near electronegative atoms tend to be ________ relative to ¹H nuclei which are not.

A) shielded
B) deshielded
C) resonanced
D) split
E) none of the above

A diastereomer is called erythro if its Fischer projection shows similar groups ________.

A) opposite each other on the same carbon
B) equally spaced about a central carbonyl
C) directly above and below a central carbonyl
D) on the same side of the molecule on adjacent carbons
E) on opposite sides of the molecule on adjacent carbons

Which of the following factors influences the intensity of a peak in the IR spectrum of a molecule?

A) mass of atoms
B) dipole moment
C) bond strength
D) bond length