In science, there are notation and interpretations. Just like there is notation to denote the nucleus of an atom in terms of is mass number A and atomic number Z. A lot of information about the nucleus and the atom can be drawn from this. Consider an element ^AX_Z. Based on this information, answer the question that follow.

What is the no. of protons in this element?

Z

Mass no. = No. of Protons + No. of Neutrons 

Atomic No. = No. of Protons 

A = Z + No. of Neutrons