Consider the following half$-$reactions:

$(1)$ The strongest oxidizing agent is:

enter formula

$(2)$ The weakest oxidizing agent is:

$(3)$ The weakest reducing agent is:

$(4)$ The strongest reducing agent is:

$(5)$ Will $Z{n}^{2+}(aq)$ oxidize $Ag(s)$ to $A{g}^{+}(aq)?$

$(6)$ Which species can be reduced by $H_2(g)?$

If none, leave box blank.