Answer: I > Fe > Mn > N
Step-by-step explanation:
Using periodic table of elements,
Iodine (I) have a molar mass of 126.90 amu,
Iron (Fe) have a molar mass of 55.86 amu
Manganese (Mn) have a molar mass of 54.9 amu and the least is Nitrogen (N) with a molar mass of 14.0 amu. Where amu stands for "atomic mass unit"