Chemical Forums

Chemistry Forums for Students => High School Chemistry Forum => Topic started by: MITaylor on October 27, 2014, 09:24:34 PM

Title: Chemical {nomenclature} Help
Post by: MITaylor on October 27, 2014, 09:24:34 PM
I'm studying for a test tomorrow, and I came across this formula:
Al3+(BrO3-)3
I'm supposed to put it into words, but I'm not sure I got it correct.
Thanks!
Michael

*{MOD Edit - change title}*
Title: Re: Chemical Equation Help
Post by: Arkcon on October 27, 2014, 09:28:32 PM
Doesn't seem to be what I'd call a chemical equation.  However, i you're not sure you got it correct, tell us what you got, and we'll see if we can't give you some hints on where you may be wrong.  Or at least have a better idea of what you're asking.

And please trouble yourself to read the Forum Rules, linked in Red, at the top of each page.  We don't just give answers, we like to help people learn to help themselves.
Title: Re: Chemical Equation Help
Post by: MITaylor on October 27, 2014, 09:31:00 PM
I'm thinking it's aluminum bromine trioxide, but that doesn't sound right...
I'm just confused by that "3" at the end.
Title: Re: Chemical Equation Help
Post by: Hunter2 on October 28, 2014, 01:59:05 AM
It is Aluminium(tri)bromate. The 3 is necessary because Aluminium has 3 positive charges and the Bromate only one negative charge. The tri is not necessary because there not other possibilities for that compound. Aluminiumions have under normal circumstances only the oxidation number 3+.
Title: Re: Chemical Equation Help
Post by: Arkcon on October 28, 2014, 05:47:16 AM
And just a further note to what I was mentioning, this sort of problem is chemical nomenclature, not chemical equations.  And like Hunter2: said, no, you hadn't given it the correct name.  You can't take apart the polyatomic ion into component elements when naming a compound. 
http://en.wikipedia.org/wiki/IUPAC_nomenclature_of_inorganic_chemistry#System
http://en.wikipedia.org/wiki/Oxyanion