MITTED Question 3
Study the densities of the metals in the table below. Based on your experimental data, which metal was likely used
to make the pre-1982 pennies? Describe what led you to this conclusion.
For
Submit For
Score
Metal
Density (g/mL)
selected files
aluminum
2.70
5
Comments
titanium
4.50
zinc
7.14
iron
7.87
copper
8.92
silver
10.49
lead
11.34
gold
19.3
B
7
x
X,
Font Sizes
A- A - E 1 E 3

The answer is d.potassium

Answerthe half-reaction having the greatest tendency to occur at the anode:     i₂(aq) + 2e⁻  ⇄ 2i⁻  ;   e = +0.53 v======oxidation occurs at the anode. we must therefore find the half-reaction with the greatest tendency to oxidize.the given values of e are reduction potentials (the form of the half-reactions are of reduction).the lower the reduction potential, the higher the potential to oxidize. the half-cell with the lowest reduction potential will have the greatest tendency to oxidize at the anode.the half-reaction having the greatest tendency must be    i₂(aq) + 2e⁻  ⇄ 2i⁻    e = +0.53 vbecause its reduction potential is the lowest out of the three.

I’m not sure about this question