Chapter 4 - The Structure of Atoms - Exercises - Atomic Composition, Isotopes, and Atomic Weights - Page 164: 22

Please see the answer below.

Number of protons in an atom = Atomic number For neutral atoms, number of protons = number of electrons. For cations, number of electrons = Atomic number- Charge on the atom. Number of neutrons = Atomic number- Mass number a) Mg- neutral atom Atomic number =12 Mass number = 24 Number of protons = 12 Number of electrons = 12 Number of neutrons = 12 b) V- neutral atom Atomic number =23 Mass number = 51 Number of protons = 23 Number of electrons = 23 Number of neutrons = 28 c) Zr- neutral atom Atomic number =40 Mass number = 91 Number of protons = 40 Number of electrons = 40 Number of neutrons = 51 d) Al- neutral atom Atomic number =13 Mass number = 27 Number of protons = 13 Number of electrons = 13 Number of neutrons = 14 e) Zn- cation (2+ charge) Atomic number =30 Mass number = 65 Number of protons = 30 Number of electrons = 28 Number of neutrons = 35 f) Ag- cation (1+ charge) Atomic number =47 Mass number = 108 Number of protons = 47 Number of electrons = 46 Number of neutrons = 61