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Amanda Hagen 1L
Posts: 26
Joined: Fri Sep 29, 2017 7:04 am


Postby Amanda Hagen 1L » Tue Nov 21, 2017 6:40 pm

Can someone explain when we use "ion" at the end of the name of a coordination compound?

Ashley Davis 1I
Posts: 57
Joined: Fri Sep 29, 2017 7:04 am

Re: Naming

Postby Ashley Davis 1I » Tue Nov 21, 2017 7:10 pm

If the coordination compound has an overall charge like -1 or +1, it would then be an ion. For example, hexacyanoferrate(II) ion is an ionic compound because it has a charge of -4. But a compound like potassium hexacyanidochromate(III) is a neutral compound: three potassiums with a charge of -1 bound to the hexacyanidochromate(III) ion which has a charge of +3.

Adrian Lim 1G
Posts: 88
Joined: Fri Sep 29, 2017 7:03 am

Re: Naming

Postby Adrian Lim 1G » Wed Nov 22, 2017 8:41 am

Where does the roman numeral III come from? Does it stem from the charge of the chromium?

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