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Chemistry Forums for Students => High School Chemistry Forum => Topic started by: Helpmeplease1 on January 22, 2019, 07:34:55 PM

Title: Oxidation states
Post by: Helpmeplease1 on January 22, 2019, 07:34:55 PM

A brown black compound of the element thallium was found to contain 89.5% Tl and 10.5% O by mass. What is the oxidation state of thallium in this compound.

I haven’t really done any oxidation states before. Could somebody explain how to work this out please? :)

Title: Re: Oxidation states
Post by: Helpmeplease1 on January 22, 2019, 08:14:42 PM

Could somebody please refer me to a link or a video that would help to explain how to work this out please?

Title: Re: Oxidation states
Post by: Borek on January 23, 2019, 02:44:35 AM

First step is to find the formula from the given information. Then - you know O is (almost) always divalent.