Question

This column of the periodic table represents the halogen family. This is a family of reactive elements. Compare and contrast how the elements are similar and different.

Answer 1

The 17th group elements known as Halogen family.

the similarity is that the atoms present in this group are smallest in atomic size when move from left to right in a peroid .

as size decreases their ability to gain an electron increases thats why all these elements are highly electronegative.

difference is that all other elements show variable oxidation state except Fluorine.