Question

Which of the statements correctly describes the reactivity of halogens, according to the octet rule?

Answer 1

They have seven electrons in their valence shell, so halogens are very reactive.
Hope this helps! :)

Answer 2

Answer:

They have seven electrons in their valence shell, so halogens are very reactive.

Explanation:

The halogens are the elements of the group 17 (or 7A) of the periodic table, all the elements have the valence shell $s^{2}p^{5}$, so they have 7 electrons in their valence shell.

These elements need only one electron to be stable according to the octet rule, so they are very reactive, they can react with metals, non-metals, hydrogen and with themselves.