Question

If we took one proton away from Gold (79), what would happen ?
a. Nothing
b. It would turn into Hg
c. It would become an isotope
d. It would become platinum

Answer 1

I'm pretty sure it would become platinum.

The question tells us that the atomic number of Gold is 79.
That means that Gold has 79 protons.

If we take one proton away, then we would have 78 protons.
And Platinum has 78 protons.