Re: Oxidation Number Rules...

In article <d9vjqe$7sj$1@xxxxxxxxxxxxxxxx>, Ruben Dario Cortez <rcortez@xxxxxxxxx> wrote:
: Hello everyone...

: How Can I the Oxidation Number Rules when there are two or more elements
: with variable numbers are present...
:
: - Fe[Pt(Cl)6]
: - K4[Fe(CN)6]
: - CuCNS
: -Cu2[HIO6]

In all of these examples, there are enough elements in the compound that only
have one usual oxidation state that if the others are restricted to their
usual oxidation states, there is only one answer. It also helps if you
know the charges on the anions. For example, in your first compound,
if Cl is present as chloride (Cl-), what will the O.S. of Fe be if the
Pt atom is formally +2? What if the Pt atom is formally +4? Which of those
two answers is more likely to be correct?

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Richard Schultz schultr@xxxxxxxxxxxxxx
Department of Chemistry, Bar-Ilan University, Ramat-Gan, Israel
Opinions expressed are mine alone, and not those of Bar-Ilan University
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"Contrariwise," continued Tweedledee, "if it was so, it might be, and
if it were so, it would be; but as it isn't, it ain't. That's logic."
.