CHM 501

1. Write the electron configurations for the following (use the rare gas notation for closed shells): a) Sc+; b) N3–; c) Zn2+; d) Cu+; e) Au3+; f) Gd3+; g) Ce3+.

Answer

a) Sc+: [Ar]3d2

b) N3–: [Ne]

c) Zn2+: [Ar]3d10

d) Cu+: [Ar]3d10

e) Au3+: [Xe]4f145d8

f) Gd3+: [Xe]4f7

g) Ce3+: [Xe]4f1