An unidentified metal forms an ionic compound with the carbonate anion. The metal forms a 2+ cation. If the minimum ration of the number of protons in the metal to the oxygen protons s 5:6, what is the metal?
(xprotons/5 protons)= (24protons/6protons)
Solve for x. Something like 20? What element has 20 protons and forms a +2 cation?