What is the charge on the iron cations in iron(II) chloride and iron (III) chloride, respectively?

Answer 1

The Roman numerals after the name of the iron cation indicates the charge on the iron cation.

When naming ionic compounds which contain metal ions capable of forming more than one kind of cation, the Roman numeral after the metal's name indicates the charge.

Therefore, the iron cation in iron(II) chloride has a charge of #2^+#, and the charge on the iron cation in iron(III) chloride has a charge of #3^+"#.

This video provides some additional examples of how to use Roman numerals when naming compounds.

In the image below, a solution of iron(III) chloride is on the left side and a solution of iron(II) chloride is on the right side.

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Answer 2

Olivia Anton

In iron(II) chloride, the charge on the iron cations is +2, and in iron(III) chloride, it is +3.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.