What Does Compound Notation with Parentheses and Colons Mean?

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The notation (Zn, Cd)S indicates a sulfide compound containing both zinc and cadmium atoms within the same crystal structure. Elements following a colon, such as in (Zn, Cd)S: Cu, Al, may refer to additional components or ions present in the solution, possibly indicating a mixture or an electrochemical cell context. The discussion suggests that the colon could denote elements that interact with or are part of the system alongside the sulfide compound. Clarification on the specific meaning of the colon in this context remains uncertain. Understanding these notations is crucial for interpreting chemical compositions accurately.
AcidRainLiTE
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Hello,
I have a question about notation.
What does it mean when you have two elements in parentheses separated by a comma? For example,
(Zn, Cd)S

Also, what do elements which come after a colon mean? Specifically,
(Zn, Cd)S: Cu, Al

Thanks.
 
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AcidRainLiTE said:
Hello,
I have a question about notation.
What does it mean when you have two elements in parentheses separated by a comma? For example,
(Zn, Cd)S
This should mean: sulfide of Zn and Cd (atoms of Zn and atoms of Cd in the same crystal of sulfide).
Also, what do elements which come after a colon mean? Specifically,
(Zn, Cd)S: Cu, Al

Thanks.
Don't know this one; maybe it means: in a solution containing copper and aluminum ions.
 
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Is this maybe some sort of electrochem cell diagram format?
 

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