JAMB - Chemistry (2000 - No. 38)
A common characteristics of copper and silver in their usage as coinage metals is that they
have high metallic lustre
are not easily oxidized
are easily oxidized
are not easily reduced
Giải thích
Apart from the fact that Copper is a transition metal while Silver is not, both of them reducing agents, thus they are not easily oxidized. The correct answer is option B.