GC_4253_L06_Electron_Configuration.docx - Electron Configuration PRE-LAB QUESTIONS 1 What is an electron configuration Electron configuration is the

GC_4253_L06_Electron_Configuration.docx - Electron...

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PRE-LAB QUESTIONS 1. What is an electron configuration? Electron configuration is the arrangement of electrons in sublevel orbits around the nucleus of an atom 2. How is the light emitted by an atom related to its electron configuration? Light is emitted by an electron moving from higher energy levels to lower levels and the wavelength is about the same amount of the change in the energy levels. ©eScience Labs, LLC 2015 Electron Configuration
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EXPERIMENT 1: THE CHEMISTRY OF FIREWORKS Data Sheet Table 3: Results of Firework Material Ignition Substance Observations Lithium chloride (LiCl) When it burned it was a dark red color Sodium chloride (NaCl) Burned light orange Potassium chloride (KCl) Had purple and blue color when burned Calcium chloride (CaCl 2 ) Burned as an orange color Table 4: Electron Configuration Element Electron Configuration K 1s 2 2s 2 2p 6 3s 2 3p 6 4s 1 Li 1s 2 2s1 Na 1s 2 2s 2 2p 6 3s 1 Ca 1s 2 2s 2 2p 6 3s 2 2p 6 4s 2 Table 5: Color of Light Emitted by Salt Types ©eScience Labs, LLC 2015 Electron Configuration
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Salt Color Wavelength LiCl Red 750 NaCl Light orange
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Unformatted text preview: 590 KCl Blue and purple 450 CaCl 2 Orange 620 Post-Lab Questions 1.Write out the electron configurations of carbon and each of the metals of the salt compounds used. Record this in Table 4. Potassium is already done as an example for you. Hint : The periodic table is very helpful and can be used as a guide. 3.Identify the color emitted by each of the salts along with the corresponding approximate wavelength using Table 2 in the Introduction. Record your results in Table 5.4. Why does a salt compound give off light (or a colored flame) when burned? During the process of moving from a higher wavelength to a lower one the electrons glue of electromagnetic energy which becomes visible to us. 5.Barium chloride (BaCl 2 ) emits a green color when flame-tested. What can be said about the wavelength of light it emits? The wavelength of the green light can be described as a range from 520-560 ©eScience Labs, LLC 2015 Electron Configuration...
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  • Spring '15
  • Khurana
  • Light, Sodium, Sodium chloride, Potassium Chloride, blue color

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