What Does Compound Notation with Parentheses and Colons Mean?

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SUMMARY

The discussion focuses on the interpretation of compound notation in chemical formulas, specifically the notation (Zn, Cd)S, which signifies a sulfide compound containing both zinc (Zn) and cadmium (Cd) atoms within the same crystal structure. Additionally, the elements following a colon, such as in (Zn, Cd)S: Cu, Al, are interpreted to represent ions present in a solution, indicating the presence of copper (Cu) and aluminum (Al) ions. This notation is crucial for understanding the composition and behavior of compounds in various chemical contexts.

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  • Understanding of chemical notation and formulas
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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.
 
Last edited:
Is this maybe some sort of electrochem cell diagram format?
 

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