# What is the atomic number of nickel?

I aks, because if you are doing your chemistry homework, you should have access to a Periodic Table. No one expects you to know offhand that the atomic number, $Z$, of $N i = 28$; this is why you would be issued with a Periodic Table in every chem and physics exam you ever sit. You will be expected to know what $Z$ signifies in terms of atomic structure: how many protons; how many electrons; how many neutrons in ""^58Ni. You will also be expected to know how the use the Table.