Question on: JAMB Chemistry - 2023
Which transition metal is known for its multiple colorful oxidation states and compounds used in pigments and paints?
A
Silver (Ag)
B
Copper (Cu)
C
Gold (Au)
D
Zinc (Zn)
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Correct Option: B
Copper exhibits various oxidation states, including +1 and +2, which contribute to the formation of colourful compounds. Copper compounds are commonly used in pigments, such as copper(II) sulfate (CuSO₄), which imparts a blue colour.
Therefore, the correct answer is Copper (Cu).
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