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Technoratiwhich have only one charge?
Submitted by Anonymous on 13 February 2006 - 11:03pm.
What elements have only one charge as ions?
I know there should be at least two elements that only form one charge, but I can't verify it in any of my books.
Well stop looking in books about Buffy the Vampire Slayer and try some chemistry text books instead! Your library may have some! :)
Your best bet for singly-changed anions and cations are halogens and alkali metals.
But there are plenty of others too.
The most poisonous is thallium
Hydrogen (typically) ONLY ever forms a single, one charged ion...H+
(H- is kinda possible, but only very rarely)
Halogens *typically* form single charged (negative) ions, but others are possible (as ever) under the right conditions.
I bet it's hard to make anythign other than F- though.
Are you talking about charges or oxidation states? Many elements can form multiple oxidation states (especially the transition metals and even the halogens and most of the elements in the p-block), but they have charges that they keep most of the time.
Most of the alkali metals (column 1A) and the alkaline earth metals (2A) make only one charge. Halogens usually have the negative 1 charge. As you go down more and more rows in the periodic table, it seems as if there are more and more oxidation states possible for the different elements... but whether those are charges or not is beyond my understanding.