What atoms on the periodic chart would produce positive ions?

Answer 1

Those designated as metals or metalloids. These include all of columns 1 and 2 and the lower parts of columns 3 through 6.

Answer 2

Atoms that lose electrons to form positive ions are typically metals located on the left side of the Periodic Table such as sodium, potassium, calcium, and magnesium. These metals have low ionization energies, meaning it is easier for them to lose electrons and become positively charged ions.