Which element is the most
reactive element in group one of the periodic
table

Li

Explanation:

According to periodic table, lithium will be the most reactive element because reactivity decreases down the group

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.