Question

Which is more reactive Cesium or Francium? Also explain why.

Answer 1

Explanation:

Cesium is more reactive. Despite the fact that reactivity increases as we go down group 1 or Alkali metals, as the outermost electrons get further and further away from the nucleus and as a result, become easier to remove from the atom. ... Hence as a result we see that cesium is more reactive than francium.

Answer 2

Answer:

Francium, however, is a laboratory-produced element and only minute quantities have been made, so for all practical purposes, the most reactive metal is cesium. Cesium reacts explosively with water, though it is predicted francium would react even more vigorously.