Final answer:
The multiplicity of the hydrogen atom or group of hydrogen atoms can be determined based on the number of bonds and lone pairs in the Lewis structure.
Step-by-step explanation:
The predicted multiplicity for the indicated hydrogen atom or group of hydrogen atoms can be determined based on the number of surrounding atoms and bonds.
In the Lewis structure of a molecule, each line represents a bond and each end of a line represents a carbon atom. Hydrogen atoms are not drawn if they are attached to a carbon. To predict the multiplicity, count the number of bonds and lone pairs around the hydrogen atom or group of hydrogen atoms. The multiplicity corresponds to the number of bonds and lone pairs.
For example, in the Lewis structure of glycine (H2NCH2CO2H), the nitrogen atom is bonded to two hydrogen atoms. Therefore, the multiplicity of the hydrogen atom attached to the nitrogen atom is 2.