So the school gave us some work over the summer and I don't understand one of the check-list things.
Do you understand how the endings -ate and -ide tell you which elements are present in a compound.
Also how do you work out the formula for aluminium nitride
I'm not sure what the charges are for nitride and the sulphide?
Thanks in advance
-ate and -ide Watch
- Thread Starter
- 25-07-2014 15:38
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- 25-07-2014 15:58
Ide mwans its on its own
Ate I think means it also has hydrogen or oxygen combined as well
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- 25-07-2014 16:20
-ide and -ate are easy.
There are too many chemical elements which have many oxidation states. Typically, The highest (+) oxidation state has ending (ate), and lowest has ending (ide)
For example: Sulfur has 3 different types of oxidation states. -2, +4 and +6.
When Sulfur uses its -2 oxidation state, we call it Sulfide. Na2S sodium sulfide.
When Sulfur uses its +4 oxidation state, we call it Sulfite. Na2SO3 sodium sulfite
When Sulfur uses its +6 oxidation state, we call it Sulfate. Na2SO4 sodium sulfate.
and by the way, Iron (III) sulfide is: Fe2S3
aluminium nitride is: AlN
As I said ide has the lowest (o.s) Sulphide- (-2), nitride - (-3)