WAEC - Chemistry (2012 - No. 21)
Which of the following metals would readily displace hydrogen from steam?
Copper
Lead
Magnesium
Silver
คำอธิบาย
In the electrochemical series, H\(^+\) is above all the other elements in the series except Magnesium. Hence, only Mg\(^{2+}\) can displace hydrogen from a reaction.