A solution containing the ion CoF₆^3- has an absorption maximum at $\lambda$_max = 680 nm. The color of this solution is ________ A)red. B)green. C)blue. D)orange. E)violet.

Question

Quizplus · Accepted Answer

The color observed is complementary to the color absorbed. Since the solution absorbs at 680 nm (in the red region), it will appear green, which is the complementary color to red.

A Solution Containing the Ion CoF63- Has an Absorption Maximum λ\lambdaλ

A Solution Containing the Ion CoF₆^3- Has an Absorption Maximum $\lambda$