Answer: D.atomic mass.
Explanation: The general representation of an element is given by: [tex]_Z^A\textrm{X}[/tex]
X = chemical symbol of element
Z= atomic number= which represents the number of electrons.
A= mass number or atomic mass =which represents the number of electrons + number of neutrons
Thus mass number is greater than number of electrons and number of neutrons as it is the sum of both.
