E.Con Worksheet 2
Name ____________________________
Date ________________ Per ______
PART A – ORBITAL DIAGRAMS & LONGHAND ELECTRON CONFIGURATION
Use the patterns within the periodic table to draw orbital diagrams and write longhand electron
configurations for the following atoms.
Symbol
# e-
1.
Mg
12
2.
P
15
3.
V
23
4.
Ge
32
Orbital Diagram and
Longhand Electron Configuration
Electron Configuration – Ch. 4
CHEM
5.
Kr
36
6.
O
8
Electron Configuration – Ch. 4
CHEM
PART B – SHORTHAND ELECTRON CONFIGURATION
Use the patterns within the periodic table to write the shorthand electron configurations for the
following elements.
Symbol
7.
Ca
8.
Ba
# e20
Shorthand Electron Configuration
Not required
9
9.
F
1
0.
Ba
56
PART B – RULES OF ELECTRON CONFIGURATIONS
Which of the following “rules” is being violated in each electron configuration below? Explain
your answer for each. Hund’s Rule, Pauli Exclusion Principle, Aufbau Principle
1 
1. 1s

 __ __
2s
2p
Hund's Rule – every orbital must be singly occupied first
1 
2. 1s

  
___
 _ _
2s
2p
3s
3p
Aufbau Principle – lowest energy orbital occupied first (ie. 3S before 3p)
1 
3. 1s

  

  _
2s
2p
3s
3p
Pauli Exclusion Principle – 3s orbital cannot have electrons with same spin direction.
Stability & Electron Configuration – Ch. 4
CHEM

1
1s
4.

  

  
    
2s
2p
3s
3p
3d
Aufbau Principle – occupy lowest energy orbitals first and 4s comes before 3d
Stability & Electron Configuration – Ch. 4
CHEM