Which groups on the periodic table contain metalloids?
a. groups 1–2
b. groups 3–12
c. groups 13–16
d. groups 17–18

Groups 13-16.

Explanation:

There are 18 groups in the periodic table.

The first and second group contains only metal (alkali and alkaline earth metals)

The third to twelfth group (3-12) also contains only metals (the transition metals and inner transition metals).

Now the groups from 13 to 18 contains metals, non metals and metalloids

group 17-18 are strictly non metals

Thus the metalloids find their place in groups 13-16.

thats how its supposed to be