Be sure to answer all parts. How many protons, neutrons, and electrons are in the following isotope of nickel: 71Ni ? (a) Protons (b) Neutrons (c) Electrons Enter your answer in the provided box. What is the mass number of an iron atom that has 29 neutrons? Be sure to answer all parts. For each of the following species, determine the number of protons and the number of neutrons in the nucleus: 1224Mgprotonsneutron(s)3579Brprotonsneutron(s)