which has the maximum standard oxidation potential.(1) Zn (2) Cu (3)Ag (4)Mg
Answers
Answer: (3) Ag
Explanation:
The oxidation state refers the oxidation number, which refers the number of electron lost during the chemical reaction. According to the number of electron present in the atom, the chemical properties can be changed.
The oxidation states of copper are -1, -2, 0, +2, +4, and +3
The oxidation states of zinc are +2, +1, 0, and -1
The oxidation states of silver are -1, -2, +2, +3, and +1
The oxidation states of magnesium are +1 and +2
On comparing silver and copper, the oxidation state of copper is higher as it as valence electron in its 4s orbital while silver has valence electron in its 5s orbital. Thus, the energy required to remove electron from silver is less than copper, so, the oxidizing potential of silver is higher among the metals given.