How can a roman numeral in a chemical name be used to write a chemical formula?
A. The roman numeral is the charge on the nonmetal in the chemical
formula.
B. The roman numeral is the metal's oxidation state used as the
subscript on the nonmetal in the crisscross method.
C. The roman numeral is the nonmetal's oxidation state used as the
subscript on the metal in the crisscross method.
O D. The roman numeral is the subscript on the metal in the chemical
formula.

Idont really know sorry

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.