if you mean pure barium as in barium metal then yes it is very reactive if you left a piece of it
out in the open air over night it would turn to a pile of white barium oxide and other various compounds
The chemical element barium is very reactive; all the natural isotopes of barium are stable (nonradioactive).
Caesium is slightly more reactive than barium.
The Pauling electronegativity of barium is 0,89 so it is a reactive metal.
very reactive
Radium
Cesium, since barium and lutetium are also metals.
Cesium is extremely reactive.
Barium, since lutetium is also a metal. (At the next-to-rightmost column of this period is iodine, which may be as reactive as barium but is a nonmetal.)
Francium is considered to be more reactive than caesium.
more reactive
Plutonium is more reactive than Cesium.
Cesium
No, it is less reactive.
Cesium, since barium and lutetium are also metals.
Francium is more reactive.
Cesium is extremely reactive.
Barium, since lutetium is also a metal. (At the next-to-rightmost column of this period is iodine, which may be as reactive as barium but is a nonmetal.)
Ba; Barium
Cesium is more reactive. Down the group reactivity increases.
Francium is considered to be more reactive than caesium.
more reactive
In reaction with water and oxygen Fr is more reactive than Cs