Correct Answer - Option 1 : Na>Mg>Zn>Fe
Explanation:
- The reactivity of metal depends upon their ability to form a cation. So, metal has a more electropositive nature and also more reactivity.
- In the periodic table, moving from left to right the reactivity of the element decreases, and moving from top to bottom reactivity increases.
Arranging the elements from the order of reactivity:
K>Na>Ca>Mg>Al>Zn>Fe>Pb>Cu>Ag>Au
So, the correct order of reactivity is Na>Mg>Zn>Fe.
- Caesium is the most reactive metal in the periodic table as well as the most electropositive element.