Orbital Diagrams, Electron Configurations, and Dot diagrams

1
Orbital Diagrams, Electron Configurations, and
Dot diagrams

• Unit 2
• (Chapter 13)

2
Rules for filling e- in the e- cloud.
Aufbau Principle
Electrons fill lowest energy levels 1st.
Pauli Exclusion Principle
An orbital can only hold two e- and they must
have opposite spin. (Cannot have the same 4
quantum numbers)
Hunds Rule
Sublevels with multiple orbitals (p, d, f) must
fill orbitals one at a time before doubling up.
1s
2s
2p
3
1. Manganese Z 25
A) orbital ? diagram
1s
2s
2p
3s
3p
4s
3d
B) electron ? configuration
1s2
2p6
2s2
3s2
3p6
4s2
3d5
4s2
1s 2s 2p 3s 3p 3d 4s 4p 4d 4f 5s 5p 5d 5f 5g 6s
6p 6d 6f 6g 6h 7s 7p 7d 7f 7g 7h 7i
Mn
Mn
C) Dot diagram
4
2. Oxygen Z 8
A) orbital ? diagram
1s
2s
2p
1s2
B) electron ? configuration
2p4
2s2
1s 2s 2p 3s 3p 3d 4s 4p 4d 4f 5s 5p 5d 5f 5g 6s
6p 6d 6f 6g 6h 7s 7p 7d 7f 7g 7h 7i
C) Dot diagram
O
5
3. Magnesium Z 12
A) orbital ? diagram
1s
2s
2p
3s
3s
B) electron ? configuration
1s2
2p6
2s2
3s2
3s2
1s 2s 2p 3s 3p 3d 4s 4p 4d 4f 5s 5p 5d 5f 5g 6s
6p 6d 6f 6g 6h 7s 7p 7d 7f 7g 7h 7i
Mg
Mg
C) Dot diagram
6
Make sure you corrected your worksheet
4. Iron Z 26
A) orbital ? diagram
1s
2s
2p
3s
3p
4s
3d
B) electron ? configuration
1s2
2p6
2s2
3s2
3p6
4s2
3d6
4s2
1s 2s 2p 3s 3p 3d 4s 4p 4d 4f 5s 5p 5d 5f 5g 6s
6p 6d 6f 6g 6h 7s 7p 7d 7f 7g 7h 7i
C) Dot diagram
Fe
Fe
7
5. Arsenic Z 33
A) orbital ? diagram
1s
2s
2p
3s
3p
4s
4p
3d
B) electron ? configuration
1s2
2p6
2s2
3s2
3p6
4s2
3d10
4s2
4p3
4p3
1s 2s 2p 3s 3p 3d 4s 4p 4d 4f 5s 5p 5d 5f 5g 6s
6p 6d 6f 6g 6h 7s 7p 7d 7f 7g 7h 7i
C) Dot diagram
As
8
6. Neon Z 10
A) orbital ? diagram
1s
2s
2p
B) electron ? configuration
1s2
2p6
2s2
2s2
2p6
1s 2s 2p 3s 3p 3d 4s 4p 4d 4f 5s 5p 5d 5f 5g 6s
6p 6d 6f 6g 6h 7s 7p 7d 7f 7g 7h 7i
C) Dot diagram
Ne
9
7. Carbon Z 6
A) orbital ? diagram
1s
2s
2p
B) electron ? configuration
1s2
2p2
2s2
2s2
2p2
1s 2s 2p 3s 3p 3d 4s 4p 4d 4f 5s 5p 5d 5f 5g 6s
6p 6d 6f 6g 6h 7s 7p 7d 7f 7g 7h 7i
C) Dot diagram
C
C
10
8. Tin Z 50
A) orbital ? diagram
1s
2s
2p
3s
3p
4s
4p
3d
5s
4d
5p
B) electron ? configuration
5p2
5p2
1s2
2p6
2s2
3s2
3p6
4s2
3d10
4p6
4d10
5s2
5s2
1s 2s 2p 3s 3p 3d 4s 4p 4d 4f 5s 5p 5d 5f 5g 6s
6p 6d 6f 6g 6h 7s 7p 7d 7f 7g 7h 7i
C) Dot diagram
Sn
11
c ??
9. What is the frequency of light that has a
wavelength of 685 nanometers.
wavelength
nano
685
nano 10-9
so this is 685 x 10-9 m
Knowns and unknown
c 3.00 x 108 m/s
? ______________
3.00 x 108 m/s
?

? ______________
685 x 10-9 m
685 x 10-9 m
?

4.38 x 1014 1/s
12
10. What is the energy of a photon of radiation
emitted by a radio station broadcasting at 93.7
MHz?
93.7 MHz
Mega (M) 106
so this is 93.7 x 106 Hz
Knowns and unknown
E h?
h 6.626 x 10-34 Js
E

93.7 x 106 Hz
? ______________
(6.626 x 10-34 Js)
(93.7 x 106 s-1)
E ______________
E

6.21 x 10-26 J