Warm UpWarm Up 9-11-159-11-151. When will light (photon) emit from an atom?2. Protons, Neutrons, and Electrons for 195Au3. An atom has 14 neutrons and 19 protons,
What element is it? 4. Neutrons and protons have the same _____,
protons and electrons are the same______
HomeworkFinish Lab FlameSept 14 - Quiz unit 2Sept 18 - Online HW unit 2
AgendaNotes Unit 2-5Lab Flame Turn in WS unit 2-4
Unit 2-5Unit 2-5Electron ConfigurationElectron Configuration
(locating electrons)(locating electrons)
Energy LevelEnergy Level• Energy level (n) –
represented by a whole number
• Maximum number of electrons that can fit in an energy level is: 2n2
-How many e- in level 2? -How about 3?
OrbitalsOrbitals
S
P
D
Orbitals (s,p,d,f) – are sublevels in each energy level
2e
6e
10e
Energy Level and ElectronEnergy Level and Electron
Maximum electrons
energy level (n)
1 22 83 184 32
s, p
Sublevel per energy (n)
s
s, p, d
s, p, d, f
Electron ConfigurationsElectron Configurations1
23456
7
Electron ConfigurationsElectron Configurations
Electron Configurations Electron Configurations ExamplesExamples
1.1. D orbitals are 1 less energy D orbitals are 1 less energy 2.2. Cu and Cr are exceptionsCu and Cr are exceptions
Electron Configuration ProblemsElectron Configuration ProblemsAnswersAnswers
Try:Try:CaCaSSTiTiFeFe
1s1s222s2s222p2p663s3s223p3p664s4s22
1s1s222s2s222p2p663s3s223p3p44
1s1s222s2s222p2p663s3s223p3p664s4s223d3d22
1s1s222s2s222p2p663s3s223p3p664s4s223d3d66
Flame Test LabFlame Test Lab Clean/Dry and Bring your plate up for the Clean/Dry and Bring your plate up for the
compounds compounds ((only get a small amount!!)only get a small amount!!)
Rinse your nichrome wire in between each Rinse your nichrome wire in between each compound to clean itcompound to clean it
Clean Up ProcedureClean Up ProcedureAll solid compounds from your plate goes All solid compounds from your plate goes
into the into the trash cantrash canClean your lab tableClean your lab table If your bunsen burner doesn’t have blue If your bunsen burner doesn’t have blue
flame please use a wet paper towel and flame please use a wet paper towel and wipe the tip (caution hot) to get burned wipe the tip (caution hot) to get burned residue off it.residue off it.
RinseRinse your hands after you’re done your hands after you’re done cleaning upcleaning up
AssignmentsAssignmentsSummarySummaryComplete and turn in Unit 2-4 worksheetComplete and turn in Unit 2-4 worksheetFinish lab write up due next classFinish lab write up due next class