Cesium tends to be the most reactive of the stable alkali metals (francium, Fr, is radioactive and has not been extensively studied). What atomic property of Cs is most responsible for its high reactivity? Group of answer choices

answer; i believe that the correct answer is (a) potassium(k)

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.

hi my dude or dudette