Topic IX Electron Configurations, Magnetism Keys, Group Work; Homework Assignments

1
Topic IX Electron Configurations, Magnetism
Keys, Group Work Homework Assignments

• Group Work Keys
• 9.1 Configuration, Br
• 9.2 Configuration, Ag, Te
• 9.3 Configuration, Rf
• 9.4 Ion Configurations
• 9.5 Paramagnetic or
• Diamagnetic?

• Homework Assignments,
• Kotz Treichel,
• Chapter 8
• Sections 8.1-8.5
• Slide 8

2
Key, Group Work 9.1

• For Bromine, Br, Z35
• Do the complete (long) form of the electronic
• configuration, order of filling
• 1s2 2s22p6 3s23p6 4s23d104p5
• Do the short form, starting with Ar18,order
  of filling
• Ar18 4s23d104p5
• Do the short form, starting with Ar18
• Ar183d10 4s24p5

Valence es
3
Key, Group Work 9.2
Ag, Z 47 Short, Order of Filling Kr36
5s24d9 5s14d10 Short, Order of
Shells Kr36 4d9 5s2 4d10 5s1
Valence es
Te, Z 52 Short Order of Filling Kr36 5s2
4d10 5p4 Short Order of Shells Kr36 4d10
5s2 5p4
Valence es
4
Key, Group Work 9.3
Do Short form order of filling, short form order
of shells, circle valence es for Rf,
Rutherfordium, Z104
Rn86 7s2 5f14 6d2(order of filling, PT)
Rn86 5f14 6d2 7s2 (order shells...)
Valence es
5
Key, Group Work 9.4
Zn, Z30 Ar18 4s23d10 Ar18
3d104s2 Zn 2 Ar18 3d10
Ag, Z47 Kr36 5s1 4d10
Kr36 4d10 5s1 Ag1 Kr36 4d10
I, Z53 Kr36 5s24d105p5 Kr36
4d105s25p5 I 1- Kr36 4d105s25p6
Plus 1e-
Se, Z 34 Ar18 4s23d104p4
Ar18 3d104s24p4 Se2- Ar18 3d104s24p6
Plus 2e-
6
KeyGroup Work 9.5
Cs, Ca, Cu
Cs, Z55 Xe54 6s1
paramagnetic
6s1
Ca, Z20 Ar183s2
diamagnetic
3s2
Cu, Z29 Ar18 3d10 4s1
paramagnetic
4s1
7
Key, Group Work 9.5, Continued
C, Kr, Co
C, Z6 He2 2s22p2
paramagnetic
2p2
Kr, Z36 Kr36
All es paired
diamagnetic

Co, Z27 Ar183d74s2

paramagnetic

8
Chapter 8 Atomic Electronic Configurations Sectio
ns 8.1-8.5 Assignments

• Read carefully Chapter 8, Sections 8.1-8.5, p.
  332-353
• Review chapter highlights, p. 365-366,
  1,4,5,6

Written Assignments, Chapter 8 (Sec 8.1-5)
In Chapter Exercises 8.1, 8.3, 8.4 Chapter
8study questions p. 366-370 all even, 2-34
58, 68, 74, 82, 86