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Electron configuration
The document discusses electron configuration and the filling order of electrons in atoms. It explains that electrons fill atomic orbitals based on the Aufbau principle, filling the lowest energy orbitals first until all electrons are accounted for. Diagrams show the sublevels in each energy level and how they are filled for various elements according to Hund's rule of maximum unpaired electrons.
Electron configuration
- 1. Electron Configuration Filling-Order ofElectrons in an Atom
- 2. 4f Sublevels 4d n=4 4p 3d 4s Energy n=3 3p 3s 2p n=2 2s n=1 1s
- 3. 4f Sublevels 4d s p d f n=4 s p d 4p s p s 3d 4s Energy n=3 3p 3s 1s22s22p63s23p64s23d104p65s24d10… 2p n=2 2s n=1 1s
- 4. Filling Rules forElectron Orbitals Aufbau Principle: Electrons are added one at a time to the lowest energy orbitals available until all the electrons of the atom have been accounted for. *Aufbau is German for “building up”
- 5. Energy Level Diagram 6s 6p 5d 4f 5s 5p 4d Bohr Model 4s 4p 3d Arbitrary Energy Scale 3s 3p N 2s 2p 1s Electron Configuration NUCLEUS H He Li C N Al Ar F Fe La CLICK ON ELEMENT TO FILL IN CHARTS
- 6. Energy Level Diagram 6s 6p 5d 4f Hydrogen 5s 5p 4d Bohr Model 4s 4p 3d Arbitrary Energy Scale 3s 3p N 2s 2p 1s Electron Configuration NUCLEUS H = 1s1 H He Li C N Al Ar F Fe La CLICK ON ELEMENT TO FILL IN CHARTS
- 7. Energy Level Diagram 6s 6p 5d 4f Helium 5s 5p 4d Bohr Model 4s 4p 3d Arbitrary Energy Scale 3s 3p N 2s 2p 1s Electron Configuration NUCLEUS He = 1s2 H He Li C N Al Ar F Fe La CLICK ON ELEMENT TO FILL IN CHARTS
- 8. Energy Level Diagram 6s 6p 5d 4f Lithium 5s 5p 4d Bohr Model 4s 4p 3d Arbitrary Energy Scale 3s 3p N 2s 2p 1s Electron Configuration NUCLEUS Li = 1s22s1 H He Li C N Al Ar F Fe La CLICK ON ELEMENT TO FILL IN CHARTS
- 9. Energy Level Diagram 6s 6p 5d 4f Carbon 5s 5p 4d Bohr Model 4s 4p 3d Arbitrary Energy Scale 3s 3p N 2s 2p 1s Electron Configuration NUCLEUS C = 1s22s22p2 H He Li C N Al Ar F Fe La CLICK ON ELEMENT TO FILL IN CHARTS
- 10. Energy Level Diagram 6s 6p 5d 4f Nitrogen 5s 5p 4d Bohr Model 4s 4p 3d Arbitrary Energy Scale 3s 3p N Hund’s Rule “maximum number of unpaired orbitals”. 2s 2p 1s Electron Configuration NUCLEUS N = 1s22s22p3 H He Li C N Al Ar F Fe La CLICK ON ELEMENT TO FILL IN CHARTS
- 11. Energy Level Diagram 6s 6p 5d 4f Fluorine 5s 5p 4d Bohr Model 4s 4p 3d Arbitrary Energy Scale 3s 3p N 2s 2p 1s Electron Configuration NUCLEUS F = 1s22s22p5 H He Li C N Al Ar F Fe La CLICK ON ELEMENT TO FILL IN CHARTS
- 12. Energy Level Diagram 6s 6p 5d 4f Aluminum 5s 5p 4d Bohr Model 4s 4p 3d Arbitrary Energy Scale 3s 3p N 2s 2p 1s Electron Configuration NUCLEUS Al = 1s22s22p63s23p1 H He Li C N Al Ar F Fe La CLICK ON ELEMENT TO FILL IN CHARTS
- 13. Energy Level Diagram 6s 6p 5d 4f Argon 5s 5p 4d Bohr Model 4s 4p 3d Arbitrary Energy Scale 3s 3p N 2s 2p 1s Electron Configuration NUCLEUS Ar = 1s22s22p63s23p6 H He Li C N Al Ar F Fe La CLICK ON ELEMENT TO FILL IN CHARTS
- 14. Energy Level Diagram 6s 6p 5d 4f Iron 5s 5p 4d Bohr Model 4s 4p 3d Arbitrary Energy Scale 3s 3p N 2s 2p 1s Electron Configuration NUCLEUS Fe = 1s22s22p63s23p64s23d6 H He Li C N Al Ar F Fe La CLICK ON ELEMENT TO FILL IN CHARTS
- 15. Energy Level Diagram 6s 6p 5d 4f Lanthanum 5s 5p 4d Bohr Model 4s 4p 3d Arbitrary Energy Scale 3s 3p N 2s 2p 1s Electron Configuration NUCLEUS La = 1s22s22p63s23p64s23d10 H He Li C N Al Ar F Fe La 4p65s24d105p66s25d1 CLICK ON ELEMENT TO FILL IN CHARTS
- 16. Write out thecomplete electron configuration for the following: 1) An atom of nitrogen 2) An atom of silver POP 3) An atom of krypton QUIZ Draw a Bohr model an Argon atom .
- 17. Answer Key Write outthe complete electron configuration for the following: 1) An atom of nitrogen 1s22s22p3 2) An atom of silver 1s22s22p63s23p64s23d104p65s24d9 3) An atom of krypton 1s22s22p63s23p64s23d104p6 Draw a Bohr model of a Argon atom. n= n 22+
- 18. Periodic Table –Filling Order
- 19. Electron Configurations and the Periodic Table
- 20. Orbitals Being Filled 1 Groups 8 1 1s 2 3 4 5 6 7 1s 2 2s 2p 3 3s 3p Periods 4 4s 3d 4p 5 5s 4d 5p 6 6s La 5d 6p 7 7s Ac 6d 4f Lanthanide series 5f Actinide series
- 21. Electron Filling inPeriodic Table s s 1 p 2 3 d 4 5 6 ∗ 7 Ω f ∗ Ω
- 22. s s H He H p 1 2 1 1 Li Be B C N O F Ne 2 3 4 5 6 7 8 9 10 Na Mg d Al Si P S Cl Ar 3 11 12 13 14 15 16 17 18 K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr 4 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe 5 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 Cs Ba Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn 6 ∗ 55 56 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 Fr Ra Rf Db Sg Bh Hs Mt 7 Ω 87 88 104 105 106 107 108 109 f La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu ∗ 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr Ω 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103
- 23. Electron Filling inPeriodic Table s s H He H p 1s1 1s2 1 1s1 Li Be B C N O F Ne 2 2s1 2s2 2p1 2p2 2p3 2p4 2p5 2p6 Na Mg d Al Si P S Cl Ar 3 3s1 3s2 3p1 3p2 3p3 3p4 3p5 3p6 K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr 4 4s1 4s2 3d1 3d2 3d3 3d5 3d5 3d6 3d7 3d8 3d10 3d10 4p1 4p2 4p3 4p4 4p5 4p6 Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe 5 5s1 5s2 4d1 4d2 4d4 4d5 4d6 4d7 4d8 4d10 4d10 4p1 5p1 5p2 5p3 5p4 5p5 5p6 Cs Ba Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn 6 ∗ 6s1 6s2 5d2 5d3 5d4 5d5 5d6 5d7 5d9 5d10 5d10 6p1 6p2 6p3 6p4 6p5 6p6 Fr Ra H H H H H H 7 Ω 7s1 7s2 1s1 1s1 1s1 1s1 1s1 1s1 f La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu ∗ 5d1 4f2 4f3 4f4 4f5 4f6 4f7 4f7 4f9 4f10 4f11 4f12 4f13 4f14 4f114 Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr Ω 6d1 6d2 5f2 5f3 5f4 5f6 5f7 5f7 5f8 5f10 5f11 5f14 5f13 5f14 5f14