JAMB - Chemistry (2023 - No. 53)
Which transition metal is known for its multiple colorful oxidation states and compounds used in pigments and paints?
Silver (Ag)
Copper (Cu)
Gold (Au)
Zinc (Zn)
Giải thích
Copper is known for its multiple oxidation states, including +1 and +2, and its compounds are used in pigments and paints to create various colors, such as blues and greens.