Atomic number of the element is more fundamental properties than atomic mass. Justify
Atomic number is a more fundamental property of an element than its atomic mass because when the elements are arranged in the increasing order of their atomic number, most of the defects of Mendeleev's classification get rectified.
also atomic number is unique to each element.
an element has isotopes,i.e., it can have different masses.
also atomic number is unique to each element.
an element has isotopes,i.e., it can have different masses.