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Lab 5: Electron Configuration Lecture & InstructionsPage
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Lab 5 Electron Configuration
CHEM101L
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Access Code (located on the lid of your lab kit): Click here to enter text.
Lab Report Format Expectations
Utilize college level grammar and professional formatting when completing this worksheet.
Report all equations in a proper mathematical format, with the correct signs and symbols.
Pre-Lab Questions
1. What is an electron configuration? Provide a response in the context of energy levels.
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2. Of the following colors, which would correspond to the highest energy photons (light) and which
would correspond to the lowest energy? red, orange, yellow, green, blue, indigo, violet
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EXPERIMENT 1: OBSERVING COLORS PRODUCED FROM VARIOUS METALS
Introduction Questions
1. In this experiment, you will conduct an experiment where atoms are heated with a flame. As the
atoms gain heat from the flame, different colors of light will be produced. What is causing this
light to be produced? Why are they different colors?
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2. Pick an element from the periodic table that shares a letter or two in common with the letters in
your name. State the element name, its symbol, and its electron configuration below.
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3. What is the purpose of Step 6 in the experimental procedure?
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Lab 5 Electron Configuration
CHEM101L
4. Write out the electron configurations for each of the following elements in the below table.
Potassium is already done as an example for you.
Element
K
Li
Na
Ca
Electron Configuration
1s22s22p63s23p64s1
Input
Input
Input
Data and Observations
In the below table, report your observations for each sample as you introduced them into the flame,
being sure to denote the color produced.
Table 1: Results of firework material ignition
Substance
Lithium Chloride
Sodium Chloride
Potassium Chloride
Calcium Chloride
Observations
Input
Input
Input
Input
Below, insert a photo of your lab setup after you tested each sample. The purpose of this photo is to
demonstrate that the experiment was completed, so it must have the correct materials and denote that
the experiment was conducted. Your name must also be present in the photo for credit on this lab.
Lab 5 Electron Configuration
CHEM101L
Lab 5 Electron Configuration
CHEM101L
Results and Discussion
1. For each of the ignition sources, denote the wavelength of the photons that correspond to the
colors you observed during the experiment in the table below.
Salt
LiCl
NaCl
KCl
CaCl2
Color
Input
Input
Input
Input
Wavelength
Input
Input
Input
Input
2. Which of the metals produced the highest energy photons?
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3. Did sodium chloride and potassium chloride give off similar colors? Why or why not?
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