Which of the following have the same number of valence electrons?
A)Cs,Bi,At
B)In,Pb,Bi
C)N,P,As
D)Xe,Rn,At

Question

Quizplus · Accepted Answer

N, P, and As are all in the same group/family (group 15) and therefore have the same number of valence electrons (5). Cs, Bi, At and In, Pb, Bi all have different numbers of valence electrons because they are in different groups/families. Xe, Rn, At have different numbers of valence electrons because they are in different periods/rows on the periodic table.

Which of the Following Have the Same Number of Valence