a. An atom is 16 times heavier than 1/2 of mass of a carbon atom (C-12 isotope). What is its mass in amu?
b.Why do atomic masses of most of the elements in atomic mass units involve fractions?
a. 16 amu
b. It is because atomic mass of an element is the average of relative masses of its various isotopes. While taking average, it results as a fractional value.
