A correct electrochemical series can be obtained from K, Na, Ca, Al, Mg, Zn, Fe, Pb, H, Cu, Hg, Ag, Au by interchanging?
A
Al and Mg
B
Zn and Fe
C
Zn and Pb
D
Pb and H
E
Au and Hg
Verified Correct Answer: A.
Step-by-Step Mathematical Solution
The electrochemical series, also known as the activity series, is a list of metals listed in order of decreasing reactivity or in order of decreasing ease of oxidation.
Magnesium comes before Aluminium in the series
Source: WAEC / JAMB / NECO Classroom Archive (Record #14112)