I need help with chemistry?

Question

Use table 3 to identify the strongest and weakest reducing agents among the substances listed within each of the following groupings:
a. Ca, Ag, Sn, Cl^-
b Fe, Hg, Al, Br^-
c. F^-, Pb, Mn^2+, Na
What is the directions telling me to do? Give an example for a.

Answer 1

The person above give u the correct answer. U should choose the most negative E°.

a) Ca
b) Al
c) Na

Here is the table

http://en.wikipedia.org/wiki/Table_of_standard_electrode_potentials

Answer 2

Well, the answers are Ca, Al and Na.
If "Table 3" is a table of electrode potentials, then you should be looking for the most negative one in each case.