Question

Despite their physical differences, the halogens in Group 7A are all highly reactive ___________.

a) metals
b) nonmetals
c) metalloids
d) noble gases

Answer 1

The halogens in Group 7A are all highly reactive nonmetals.

Step-by-step explanation:

The elements in Group 7A, also known as halogens, are all highly reactive nonmetals. The halogens include fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At). These elements have an electron configuration of ns²np⁵, meaning they have seven valence electrons and are one electron short of having a full outer s and p sublevel. This makes them very reactive and likely to form singly negative ions by accepting an extra electron.