Chemistry lab

Lab 5 Electron Configuration CHEM101L

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Pre-Lab Questions

1. What is electron configuration?

2. How is the light emitted by an atom related to its electron configuration?

Data

Table 1: Results of firework material ignition

Substance	Observations
Lithium Chloride	Click here to enter text.
Sodium Chloride	Click here to enter text.
Potassium Chloride	Click here to enter text.
Calcium Chloride	Click here to enter text.

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	Electron Configuration
K	1s22s22p63s23p64s1
Li	Click here to enter text.
Na	Click here to enter text.
Ca	Click here to enter text.

2. What is the approximate wavelength of light emitted by each of the salts?

Salt	Color	Wavelength
LiCl	Click here to enter text.	Click here to enter text.
NaCl	Click here to enter text.	Click here to enter text.
KCl	Click here to enter text.	Click here to enter text.
CaCl2	Click here to enter text.	Click here to enter text.

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

4. Did sodium chloride and potassium chloride give off similar colors? Why or why not?

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