The most reactive metal

4

 Elements with metallic character are placed in alkali metals, alkaline earth metals as well as transition metals.

3

  Metallic character is associated with the elements that are metals.

2

 Most of the metals are hard, have high melting/boiling points, and are malleable as well as ductile.

1

 Potassium is the most reactive metal as it has lower ionization energy than sodium due to its bigger atomic size. 

1

 Potassium is the most reactive metal as it has lower ionization energy than sodium due to its bigger atomic size. 

Thanks For Reading

Next: top 10 highest mountain in the world