MadSci Network: Chemistry

Subject: What determines the colour of copper

Date: Fri Feb 2 22:53:48 2001
Posted by No name entered.
Grade level: 7-9 School: No school entered.
City: No city entered. State/Province: No state entered. Country: No country entered.
Area of science: Chemistry
ID: 981172428.Ch

The colour of gold is a relativistic effect due to outer shell orbits 
achieving appreciable percentage of light speed. But copper is nowhere 
near as heavy an atom, is the colour due to the same effect?
How can we get so many different colors of copper-containing compounds;
what properties allow them to reflect different wavelengths of light?

Re: What determines the colour of copper

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