Quick question.

In which group of the periodic table do you find halogens?

A. 2A

B. 8A

C. 1A

D. 7A

Solution: - Halogens are fluorine, chlorine, bromine, iodine and Astatine (F, Cl, Br, I and At) and these are present in the 7A group of the periodic table. In modern periodic table this group is written as 17th group. This group elements have 7 valence electrons and so they are in group 7A.

So, the right choice is D. 7A.