7A Elements

Correct Answer: E. They all have a valence shell configuration of s²p⁵

The group 7A elements are often referred to as the halogens. This is a diverse group of elements as some are gases under standard conditions (F2, Cl2) while others are liquids (Br) and still others are solids (I and At). The only elements in this group that are diatomic are: fluorine, chlorine, bromine, and iodine. They also span a range of element classifications, with both non-metals and metalloids represented in the family. The only characteristic that is true for all elements in group 7A is that they all have an outer-shell electron configuration of s²p⁵, resulting in a total of 7 valence electrons.

Subscribe below to get the DAT Question of the Day delivered straight to your inbox every morning.