Question

what defines an atom of silver?
shiny grey colour
atomic mass of 108
47 protons
60 neutrons

Explanation:

The identity of an element is determined by the number of protons in its nucleus. Silver has an atomic number of 47, which means it has 47 protons. Color is a physical property, atomic mass can vary due to isotopes, and the number of neutrons can also vary among isotopes. Protons define the element.

Answer:

47 protons