What elements and groups have properties that are most similar to those of chlorine?
A) F, Br, I, and nonmetals in Group 7A
B) Cl, K, C, and metals in Group 1B
C) N, P, As, and lanthanides
D) He, Ne, Xe, and nonmetals in Group 7A
E) O, S, and P

Question

Quizplus · Accepted Answer

Chlorine belongs to Group 7A (or 17) and has a valence electron configuration of ns2np5. Elements within Group 7A have similar electron configurations and exhibit similar chemical properties due to their tendency to gain one electron to achieve a full valence electron shell. Thus, the elements F, Br, and I in Group 7A have properties that are most similar to those of chlorine.

What Elements and Groups Have Properties That Are Most Similar