Question

If you to know the number of protons in an atom of a given element, what would you look up?

Answer 1

If you are doing your chemistry homework there should be one beside you now!

Explanation:

And you would look up a `"Periodic Table"`. Such a `"Tables"` are always allowed in ANY chemistry or physics examination. It lists elements according to `Z`, their atomic number, and arranges the elements in Groups, which reflects their electronic structure.