How many protons are in an atom of copper?

The atom fluorine generally will become stable through the formation of an ionic chemical compound by accepting electron(s) from another atom. this process will fill its outer energy level of electrons.

Calculate the concentration of all species in a 0.165 m solution of h2co3.

The empirical formula of a compound is ch2o and its mass is 120 amu/molecule, what is its formula?