Step-by-step explanation:
Atomic number is the sum of all the number of protons present in an element. And, mass number is the sum of total number of both protons and neutrons present in an element.
When an atom is neutral in nature then its number of protons is equal to its number of electrons.
Since, it is given that atomic number of zinc is 30 so, it means that number of protons will also be 30.
Thus, we can conclude that there are 30 protons in an uncharged zinc atom.