Divalent
You don't need to be Editor-In-Chief to add or edit content to WikiDoc. You can begin to add to or edit text on this WikiDoc page by clicking on the edit button at the top of this page. Next enter or edit the information that you would like to appear here. Once you are done editing, scroll down and click the Save page button at the bottom of the page.
In chemistry, divalent anions are atoms or radicals with 2 additional electrons when compared to their elemental state (that is, with 2 more electrons than protons); for instance, S-- is the sulfide anion. Conversely, a cation is missing some electrons as compared with the neutral atom. Example: iron(II) or Fe++ is the divalent cationic form of iron. The terminology arises because in solutions or arc discharges, cations are attracted to the cathode and anions to the anode.
Divalent cations are present in abundance in hard water; for example, Ca++ and Mg++. These ionic minerals in solution are what contribute to the properties of water which cause it to be hard, such as the formation of scale.
