Name:________________________________________________ Pd:___ Date:______
Unit 4 Study Guide
1-4. Identify the parts of the wave with the diagram.
A. Wavelength
B. Amplitude
C. Trough
D. Crest
Solve the following wave equations:
5. A light wave travels at the speed of light, with a frequency of 4.6 x 1014 Hz what is the wavelength?
Speed = wavelength x frequency
(3.00 x 108 m/s)
= 6.5 x 107 m
(4.6 x 1014 Hz)
6. What is the speed of wave with the frequency of 112Hz and a wavelength of .75m?
112 Hz x .75m = 84m/s
Identify the rule/principle:
7. _Hund’s Rule ______________Single electrons with the same spin must occupy each equal energy orbital
before additional electrons with opposite spins can occupy those same orbitals.
8. ___Pauli’s Exclusion Principle __ A maximum of 2 electrons can occupy a single orbital, but only if the
electrons have opposite spins.
9. __Aufbau’s Principle ________ Each electron MUST occupy the lowest energy orbital available first
Application: Look at each orbital diagram and determine which rule or principle is being violated.
Rule/Principle:
A- Aufbau’s Principle
B- Hund’s Rule
C- Pauli’s Exclusion Principle
Orbital Diagram:
__ __ __ __ __
1s 2s
2p
10.__B__
__ __ __ __ __ __ __ __ __ __ __ __ __
1s 2s
2p
3s
3p
4s
4p
11.__C___
__ __ __ __ __ __
1s 2s
2p
3s
12.___A___
Complete the table: Identifying how many electrons and orbitals each sublevel can hold or has.
Sublevel
# of orbitals
# of electrons
s
13. __1___
17.__2___
p
14.__3___
18.__6___
d
15.__5___
19.__10__
f
16.__7___
20.__14___
Either identify the element by the configuration or write the proper configuration for the given element:
21. The element with electron configuration 1s2 2s2 2p6 3s2 3p5 is __Chlorine (Cl) _______________
22. What is the electron configuration for nitrogen? ___1s2 2s2 2p3 __________
23. The electron configuration for silicon is: _____1s2 2s2 2p6 3s2 3p2 ________________
24. Identify the elements that has the following electron configuration: 1s 22s22p63s23p64s23d10 __Zinc (Zn) __
25. Which is the Lewis dot diagram for the element Silicon (Si)? Si
26. What is the noble gas configuration for iodine:
27. Sodium has __1___ valence electrons.
[Kr]5s24d105p5
28. Only 1 of the following elements has 4 valence electrons, which element is it:
a. Chromium
b. Fluorine
c. Silicon
d. calcium
[Ar]4s2
29. ____What is the noble gas notation for calcium?
30. ___What element has this orbital diagram: __ __ __ __ __ __ __ __ __ __
1s
2s
2p
3s
3p
Potassium (K)
4s
Using the diagram above answer identify the following:
31. __D__highest frequency
32. __B__ lowest frequency
33. __B__ highest wavelength
34. __D__ lowest wavelength
35. __A_ highest amplitude
36. __D__ lowest amplitude
Completion: Name the scientist.
Albert Einstein
Erwin Schrodinger
Heisenberg’s Uncertainty Principle
Louis de Broglie
37.
_____A. Einstein____________________developed that idea of the Duality of Light; that light could
have both properties of waves and particles.
38.
The __Heisenberg Uncertainty Principle___states that one cannot know both the location and velocity of an
electron at the same time, because one cannot measure an object without disturbing the object.
39.
___Schrodinger_________________developed the model of the atom, in which we use today to do
electron configuration.
40.
____De Broglie____________________thought that if light could have properties of both particles and
waves so could matter.