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Jake
Jake asked in Science & MathematicsChemistry · 7 years ago

Find the oxidation number of each element in the compound?

Fe(ClO2)3

I need to find the oxidation number of Fe, Cl, and O.

I'm assuming Oxygen is -2, but how do I find the others?

Fe(ClO2)3

O2 is -2, so -2 * 6 = -12...

Cl is -1 (?) so -1 * 3 = -3

But I don't see how +15 could be Fe?

Could someone help me out with this?

3 Answers

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  • Anonymous
    5 years ago

    Oxidation Number Of Fe

    Source(s): https://shrink.im/bagD7
  • haddad
    4 years ago

    Fe Clo2 3

    Source(s): https://shrinks.im/babb4
  • kumorifox
    Lv 7
    7 years ago

    Compound ions where halogens are bound to oxygen are usually more complicated than the simple halogen = -1.

    For this, you need to know that all the halogen oxyanions have a charge of -1. So each ClO2 unit here has an overall charge of -1. This isn't something you can just look at and see, you have to learn this, unfortunately. This leaves Fe as +3, so the charge balances.

    Now you can work out the Cl. Cl + 2O = -1. You are right in saying O is -2, so Cl + 2(-2) = -1, so Cl = -1 + 4 = +3.

    Thus, you have Fe = +3, Cl = +3 and O = -2

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