The halogens are a group of elements that exhibit many similar chemical properties.

Question

Why are halogens grouped together in terms of atomic structure?

Answer options with 4 options
A.
They have similar atomic radii.

B.
They have electrons in the same energy level.

C.
They have the same number of valence electrons.

D.
They have increasing atomic numbers going from Upper F to Upper A t.

Answer 1

C. They have the same number of valence electrons.