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Happy Monday!.  Electron Configurations!  Last week of 1 st Quarter Lab Reports due WEDNESDAY!! Chapter 3.3 (Part 2) Test = THURSDAY!. Quantum Number. A number that specifies the properties of electrons Every electron has 4 quantum numbers

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Happy monday

Happy Monday!

 Electron Configurations! 

  • Last week of 1stQuarter

  • Lab Reports due WEDNESDAY!!

  • Chapter 3.3 (Part 2) Test = THURSDAY!


Quantum number

Quantum Number

  • A number that specifies the properties of electrons

  • Every electron has 4 quantum numbers

  • Most importantly, it specifies the orbital in which the electron is located


Quantum numbers

Quantum Numbers


Energy levels sublevels and orbitals

Energy Levels, Sublevels, and Orbitals

  • Energy Levels (represented by principle quantum number - n)

    • Higher the n, the farther away from the nucleus

      (More Energy)

  • Sublevels (s,p,d,f)

    • Number of sublevels is related to the energy level

  • Orbitals

    • Make up sublevels


Happy monday

  • There are 4 sublevels

    (& types of orbitals):

    s, p, d, f


Happy monday

Sooo….

  • Energy levelsare made up of..

    • Sublevels which are made up of..

      • Orbitals!


Another way to see it

Another way to see it:


Another way to see it1

Another way to see it:


Another way to see it2

Another way to see it:


Orbitals

Orbitals

  • Orbital:

    • Most probable location of electrons (90% chance)

    • Each orbital can hold a maximum of 2 electrons

  • Each region corresponds to a specific energy level (n)

  • Sometimes called electron clouds


Orbitals1

Orbitals

  • Described by both a number and a letter

    • Number – tells the energy level in which the orbital is located

    • Letter – tells the shape of the orbital

  • The higher the energy level, the more different shapes that are possible


S orbital

s-Orbital


P orbitals

p-Orbitals


D orbitals

d-Orbitals


F orbitals

f-Orbitals


Orbitals2

Orbitals


Orbitals3

Orbitals

  • How do these orbitals fit together?

  • Watch this…

  • And this…


P 4 in packet o fun

p.4 in Packet O Fun!


P 4 in packet o fun1

p.4 in Packet O Fun!


P 4 in packet o fun2

p.4 in Packet O Fun!


P 4 in packet o fun3

p.4 in Packet O Fun!


Lets put it all together

Lets put it all together!


Lets put it all together1

Lets put it all together!


Electron configurations

Electron Configurations!

  • An electron configuration is the arrangement of electrons in an atom


Orbital labels examples

Orbital Labels:(examples)

  • 1s

  • 2s

  • 2p

  • The number tells us the energy level

  • 3s

  • 3p

  • 3d

  • The letter tells us the orbital shape!


Happy tuesday

Happy Tuesday!!

  • Talk about Conclusions

  • Electron Configurations

    Lab Report due tomorrow TYPED

    Chapter 3.3 (part2) Test = Thursday


Aufbau principle

Aufbau Principle

  • Electrons fill the lowest-energy orbital first


Happy monday

The order in which orbitals are filled (Aufbau principle) may be also be displayed as an arrow diagram:

1s

2s 2p

3s3p 3d

4s4p4d 4f

5s5p5d5f

6s6p6d6f

7s7p7d7f

1s

2s 2p

3s3p 3d

4s4p 4d 4f

5s5p 5d 5f

6s6p 6d 6f

7s7p 7d 7f


Pauli exclusion principle

Pauli Exclusion Principle

  • Two electrons of opposite spins can occupy the same orbital


Hund s rule

Hund’s Rule

  • The number of unpaired electrons is the maximum possible and these unpaired electrons must have the same spin

    • (Must fill each orbital with 1 electron–all with the same spin–before doubling up).


Orbital diagram

Orbital Diagram:

Lowest Energy Level


Electron configuration practice h

Electron Configuration PracticeH


Electron configuration practice he

Electron Configuration PracticeHe


Electron configuration practice li

Electron Configuration PracticeLi


Electron configuration practice b

Electron Configuration PracticeB


Electron configuration practice be

Electron Configuration PracticeBe


Electron configuration practice o

Electron Configuration PracticeO

2p

2s

1s


Electron configuration practice ne

Electron Configuration PracticeNe


Electron configuration practice s

Electron Configuration PracticeS


Electron configuration practice ca

Electron Configuration PracticeCa


Electron configuration practice f

Electron Configuration PracticeF


Electron configuration practice fe

Electron Configuration PracticeFe


Electron configuration practice na

Electron Configuration PracticeNa


Electron configuration practice kr

Electron Configuration PracticeKr


Electron configuration practice ar

Electron Configuration PracticeAr


Draw a horizontal orbital diagram for oxygen

Draw a Horizontal Orbital Diagramfor Oxygen:

2p

1s

2s


Draw a horizontal orbital diagram for chlorine

Draw a Horizontal Orbital Diagramfor Chlorine:

  • Cl:

    1s22s22p63s23p5

2p

1s

2s

3p

3s


Happy monday

  • Complete bottom of p.11

  • Write configurations out based on section above.


Remember the arrow d iagram

Remember the Arrow Diagram:

1s

2s 2p

3s3p 3d

4s4p4d 4f

5s5p5d5f

6s6p6d6f

7s7p7d7f

1s

2s 2p

3s3p 3d

4s4p 4d 4f

5s5p 5d 5f

6s6p 6d 6f

7s7p 7d 7f


Practice using it

Practice using it!

  • Follow the arrows to write on the electron configurations on the bottom of p.12


What the periodic table actually looks like

What the periodic table ACTUALLY looks like:


Blocks on the periodic table

Blocks on the Periodic Table


Electron configuration practice

Electron Configuration Practice

  • Practice writing configurations based on Periodic Table Method – p.13

  • Homework if not finished.


Happy wednesday

Happy Wednesday!!

  • Finish Electron Configurations!

    • More Periodic Table Method Practice

    • Exceptions

    • Noble Gas Simplification/shortcut

  • Lab Reports Typed due TODAY!!

    • Turn in on front table

  • UPDATE: Ch.3 Pt.2 Test FRIDAY!


Exceptions to the rule

Exceptions to the Rule

  • Cr and Mo

    • s1d5

  • Cu, Ag, Au

    • s1d10


Noble gas shortcut

Noble Gas Shortcut

  • A noble gas has a full outer shell (s and p orbitals)

  • So, we can use the noble gas symbol to represent all of the inner layers of the atom, and then show what we have added to it


Noble gas shortcut1

Noble Gas Shortcut:

[Noble gas that comes before the element]

+ additional electrons

Ex: Chlorine

instead of… 1s22s22p63s23p5

Noble Gas shortcut Method = [Ne]3s23p5


Shortcut practice

Shortcut Practice

  • Si

  • Br


Happy monday

Ions!!

  • Remember how to find your number of electrons in ions!!

    K+ = how many electrons?

    Cl- = how many electrons?

    O2- = how many electrons?


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