Lab 5 - Electron Configuration PDF

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Electron Configuration with Experiment Pictures. Labs completed were from eScience and geared for Straighterline courses....

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Lab 5 Electron Configuration

CHEM101L

Student Name: Robert Prieskorn Access Code (located on the lid of your lab kit): AC-GNJ4O07

Pre-Lab Questions 1. What is electron configuration? Electron configuration indicates which orbital is being occupied by electrons in an atom. 2. How is the light emitted by an atom related to its electron configuration? As electrons move from a higher, more excited state, to a lower state the energy is represented by light. This light indicates the difference between the energy levels.

Data Table 1: Results of firework material ignition Substance Lithium Chloride Sodium Chloride Potassium Chloride Calcium Chloride

Observations Some “sparkler” effect. Hue of a red/pinkish color visualized. Lots of “sparkler” effect. Hues of green/yellow visualized. No “sparkler” effect. Hue of light purple visualized. Little “sparkler” effect. Hue of orange visualized.

Post-Lab Questions 1. Write out the electron configurations for each of the following elements. Potassium is already done as an example for you. HINT: The periodic table is very helpful and can be used as a guide. Element K Li Na Ca

Electron Configuration 1s22s22p63s23p64s1 1s^2 2s^1 1s^2 2s^2 2p^6 3s^1 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2

2. What is the approximate wavelength of light emitted by each of the salts? Salt LiCl NaCl KCl CaCl2

Color Red/Pink Yellow White/Light Purple Orange

Wavelength 620nm 580nm 380nm 600nm

3. Why does a salt compound give off light or a colored flame when burned?

Lab 5 Electron Configuration

CHEM101L

As the electron moves from high to low state the energy released is visualized as a color. Depending on the salt will yield which color is emitted. 4. Did sodium chloride and potassium chloride give off similar colors? Why or why not? No. My experiment yielded that NaCl yielded a yellow hue when ignited. Since each burned at different intensities the electron excitement state(s) were in different orbitals producing different light emissions. Insert photo of your completed lab with your name and access code handwritten in the background:...