The oxidation half-reaction for the cell is Choose one.

A. Mg2+(aq) + 2e- --> Mg(s)

B. Ag(s) --> Ag+(aq) + e-

C. Ag+(aq) + e- --> Ag(s)

D. Mg(s) --> Mg2+(aq) + 2e-

answer is d because it is trust me

answer: atomic mass was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

explanation:

originally atomic mass was used to arrange elements on the periodic table from left to right in a row. each column then shows similar properties of elements of a group.

in modern periodic table, the atoms are arranged in increasing atomic number. as atomic number represents the number of protons in an atom which is unique for every atom.