List in order of more negative electron affinity: F,Br,Sb,Rb,Se.
(more positive → more negative)
A)Br

Question

List in order of more negative electron affinity: F,Br,Sb,Rb,Se.
(more positive → more negative)
A)Br < Se < Sb < Rb < F
B)Se < Rb < Sb < Br < F
C)Sb < Br < Rb < Se < F
D)Br < F < Rb < Sb < Se
E)Rb < Sb < Se < Br < F

Quizplus · Accepted Answer

Electron affinity generally becomes more negative across a period from left to right and less negative down a group. Therefore, F (being to the right and top of the periodic table) has the most negative electron affinity, followed by elements in its group (Br) and period (Se), then Sb, and finally Rb, which is the furthest to the left and bottom.

List in Order of More Negative Electron Affinity: F,Br,Sb,Rb,Se