Why Does Magnesium Turn Black? [Solved]
Howdy, iam Erika Chance, May your day be joyful. Why Does Magnesium Turn Black? [Solved] Strips of the reactive metallic element magnesium (Mg). The strip at left is tarnished and appears darker. This is due to the formation of magnesium oxide (MgO) on its surface as the metal reacts with the oxygen and water in the air. The strip at right has been cleaned to reveal the shiny surface of the pure metal....