Why are caesium and francium the most reactive metals?

Note: to make this easier , I will talk about these two elements as if they are people) Caesium and Francium are both in group 1, which means that they want to lose their one valence electron VERY badly such that they may achieve the electron c... read more

Reactivity of group 1 metals goes up as we go down the group, which is why we have Caesium and Francium as our most reactive metals. These two elements are also the biggest (atomic radius) of the group 1 metals, which means that their lone valence electron is shielded by a greater number of electrons than sodium or lithium or any other group 1 metal. read more

Francium is part of a group of metals on the periodic table that are referred to as ‘alkali metals(1).’ In this group there are actually a number of different metals but as you start moving down the list from lithium to francium the number of electrons starts to increase. read more