Final answer:
The atomic mass of one nitrogen atom is approximately 14.01 atomic mass units (amu), as listed on the periodic table.
Step-by-step explanation:
The atomic mass of nitrogen can be determined by using the periodic table. One nitrogen atom has an atomic mass of approximately 14.01 amu (atomic mass units). The confusion might stem from molecular nitrogen (N₂), which has a molar mass of 28.01 g/mol since it consists of two nitrogen atoms. However, the atomic mass of a single nitrogen atom is what is listed on the periodic table, and that is approximately 14.01 amu.