Question

plzzzz help



Chemical reactivity of alkali metals increaseswhile that of halogen decreases downthegroup. Explain.​

Answer 1

Answer:

Chemical reactivity of alkali metals increases while that of halogens decreases as we move from top to bottom in a group . ... Alkali metals have a tendancy to lose electrons to complete its octet. As we move down a group, the number of shells increases by one, hence the atomic radius increases.