chem 101l lab 5 electron configuration straighterline 2023 pre lab questionschem 101l lab 5 electron configuration straighterline 2023 pre lab questionschem 101l lab 5 electron configuration s
Lab 5 Electron Configuration CHEM101L
Student Name: Access Code (located on the lid of your lab kit): AC – 1L54WFH
Pre-Lab Questions
1. What is electron configuration?
Electron configuration simply illustrates the distribution and arrangements of electrons in its atomic orbit.
2. How is the light emitted by an atom related to its electron configuration?
The light emitted by an atom related to its electron configuration because it establish the various energy levels that an electron can switch between like from higher energy level to lower energy level. Once an atom emits a proton, a transition has be made by an electron from higher energy level to lower energy level. Data
Table 1: Results of firework material ignition
Substance Observations
Lithium Chloride The flame turned pink in color
Sodium Chloride A golden yellow color flame seen
Potassium Chloride A light lilac color flame seen
Calcium Chloride An orange color flame seen
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 1s22s1
Na 1s22s22p63s1
Ca 1s22s22p63s23p64s2
2. What is the approximate wavelength of light emitted by each of the salts?
SaltColor Wavelength
LiClPink flame 670nm
NaClYellow flame 589nm
KClLight lilac 766.5nm
CaCl2Orange flame 600nm
3. Why does a salt compound give off light or a colored flame when burned?
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