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9C1 7th edition

Posted: Thu Dec 06, 2018 3:25 pm
by Emmaraf 1K
Why do the answers for b and d not include "ate" at the end of the transition metal so why isn't it "cobaltate"? The solution manual for some of them includes the "ate" like for letters a and c and then all of them include "ion" at the end. Why is this?

Re: 9C1 7th edition

Posted: Thu Dec 06, 2018 9:06 pm
by Chem_Mod
Hi, I posted some notes here at this link: viewtopic.php?f=157&t=38247&p=129743&hilit=coordination+compound&sid=05ea6f12f71e75b6ecc59a05bf7b6d6e#p129743. Essentially, if the overall complex has a positive charge, metal is same name as element (ex. Co in a complex cation is called cobalt, and Pt is called platinum (Fe would just be iron)). If the overall complex has a negative charge, metal ends with the suffix "-ate" (ex. Co in a complex anion is called cobaltate, and Pt is called platinate (Fe would be ferrate)).

Re: 9C1 7th edition

Posted: Thu Dec 06, 2018 9:49 pm
by Lopez_Melissa-Dis4E
It all has to do with the overall charge of the compound, if it has a negative charge you will add -ate to your transition metal.