Name_________________________________________ Period_____
4-2 / 4-3 Study Guide
1. What is the Heisenberg Uncertainty Principle?
2. Identify each of the following as s, p, d, or f orbitals.
a.
b.
c.
d.
_____ orbital
_____ orbital
_____ orbital
_____ orbital
3. Answer the following questions as true or false. If false, rewrite the statement to make it correct.
a. The denser the region in a probability cloud, the less likely an electron would be found there.
b. The probability cloud shows a specified volume of space where an electron would likely be found.
4. Draw the diagonal rule. (Note: You will be responsible for knowing this come quiz time.)
5. Write the orbital notation and electron configuration for the following elements.
Element
Orbital Notation
Electron Configuration
Niobium
Iodine
Lead
Barium
6. Write the element that would end with the following configuration.
a. 3p6____________________
b. 4p2____________________
c. 5d7____________________
d. 3d3____________________
e. 6s1____________________
f.
7. Match the three rules of electron configurations with their definition.
____a. Aufbau Principle
i.
____b. Pauli-Exclusion Principle
ii.
____c. Hund’s Rule
iii.
4p6____________________
Orbitals of equal energy are each occupied by one electron
before any orbital is occupied by a second electron, and all of
the electrons in singly occupied orbitals must have the same
spin.
An electron occupies the lowest energy orbital that can
receive it.
No two electrons in the same atom can have the same set of
four quantum numbers.
8. Match the 4 quantum numbers with their descriptions.
____a. Principal Quantum Number
i.
Main energy level of an electron.
____b. Magnetic Quantum Number
ii.
Indicates the two fundamental spin states of an electron.
____c. Angular Momentum Quantum Number
iii.
Shows the orientation of an orbital around the nucleus.
____d. Spin Quantum Number
iv.
Indicates the shape of the atomic orbital of which the
electron is located.
9. Draw the electron dot diagrams for the following elements.
a. Gallium
f.
Rubidium
b. Sulfur
g. Chromium
c. Strontium
h. Fluorine
d. Tantalum
i.
Silver
e. Copper
j.
Lead
10. Use the patterns within the diagonal rule and the periodic table to draw the orbital diagrams and electron configurations for the following
elements.
Element
Total
Orbital Diagram
Electron Configuration
Number of
Electrons
Vanadium
Germanium
Krypton
Lead
Uranium*
Cadmium
Radon
Gold*
Cesium*
Antimony
11. Which of the following “rules” is being violated in each electron configuration below? Explain your answer for each.
A.
B.
C.
D.


 __ __
1s
2s
2p


1s
2s


1s
2s


1s
2s
   ___  _ _
2p
3s
3p
      _
2p
3s
3p
           
2p
3s
3p
3d