exact answers only
The reduction potential of a substance depends upon the ease with which an atom can release electrons. Or can loose electrons.
Here in these examples Na readily looses electron , and it is the element which easily donates or releases electrons among all it can easily give electrons to reduce other atom.
Mg comes on the second position to give electrons.
Zn is the metal which is least in it, as compared to the atoms above.
I am M.Sc (chemistry ) from Punjabi University Patiala. I am a science teacher with expertise in chemistry, with 8 years of experience in teaching. Writing and blogging is my hobby, I write whenever I am free. I am constantly working on creating a new and easy way of learning the tough things in an effective way. I am constantly working to make authentic and reliable information to be shared with my students and widen the horizons of knowledge. View more posts
The Unconditional Guru