Ferrous and Ferric
Please explain to me what Fe3+ or Fe2+ is.
First dear, we are not allowed to answer directly to the sender or to
anybody but NEWTON, that is the owner of this list and organizes
questions and answers that way.
Elements atoms are neutral, that means they have the number of positive
charges (protons) = number of negative charges (electrons).
But they can turn into ions, by loosing, or gaining electrons.
If they loose the number of positive charges becomes bigger than
the number of negative ones, and instead of beeing neutral the atom
become positively charged, and is called cation. So when
you mention Fe+3 that means one iron cation (ferric) with charge +3,
having loose 3 electrons. The same way, Fe+2 (ferrous) has a +2
charge and the neutral atom lost 2 electrons.
And thanks for asking NEWTON!
(Dr Mabel Rodrigues)
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Update: June 2012