Hydrogen has three isotopes, which include hydrogen, deuterium, and tritium with atomic masses of about 1 amu, 2 amu, and 3 amu, respectively. Considering the
average atomic mass of hydrogen that appears on the Periodic Table, which statement is correct?
The average atomic mass of an element is closest to that of the isotope with the lowest natural abundance.
The average atomic mass of an element is the mean of all the isotopes of that element.
The average atomic mass of an element is closest to that of the isotope with the highest atomic mass unit.
The average atomic mass of an element is usually closest to that of the isotope with the highest natural abundance.