Question

How does the chemical reactivity of the halogens vary on going down in group 17 of the periodic table

Answer 1

The chemical reactivity of group 17 elements decreases down the group.

What happens is that all the group 17 halogens are react by gaining an electron in their outermost energy level to form anion with a charge of -1.

So down the group there is an increase in the atomic radius and hence the effective nuclear force decrease as the atomic radius increases and this leads to the decreased chemical reactivity down the group.

Answer 2

Answer:

the chemical reactivity of halogens decrease down the group from fluorine to astatine

Explanation:

by yash kansal