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Electron Structure-group 17, Cheat Sheet of Chemistry

Chemistry

Electron Structure-group 17, with diagrams

Typology: Cheat Sheet

2022/2023

Uploaded on 08/26/2023

merlin-chintapalli
merlin-chintapalli 🇦🇺

2 documents

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Element Symbol Atomic Number Electron Configuration
Fluorine F 9 1s2 2s 2 2p5 [He] 2s 2 2p5
Chlorine Cl 17 1s2 2s 2 2p6 3s2 3p5[Ne] 3s23p5
Bromine Br 35 1s2 2s 2 2p6 3s2 3p6 4s2 4p5[Ar] 3d104s24p5
Iodine I 53 1s22s22p63s23p64s24p64d105s25p5[Kr]4d105s25p5
Astatine At 85 1s22s22p63s23p64s24p64d105s25p65d106s26p5[Xe]4f145d106s26p5
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Element Symbol Atomic Number Electron Configuration

  • Fluorine F 9 1s^2 2s 2 2p^5 [He] 2s 2 2p
  • Chlorine Cl 17 1s^2 2s 2 2p^6 3s^2 3p^5 [Ne] 3s^2 3p
  • Bromine Br 35 1s^2 2s 2 2p^6 3s^2 3p^6 4s^2 4p^5 [Ar] 3d^10 4s^2 4p
  • Iodine I 53 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 4p^6 4d^10 5s^2 5p^5 [Kr]4d^10 5s^2 5p
  • Astatine At 85 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 4p^6 4d^10 5s^2 5p^6 5d^10 6s^2 6p^5 [Xe]4f^14 5d^10 6s^2 6p
  • The Halogens in group 17 will all have 7 valence electrons in the outermost s and p orbitals which can be seen in the example diagrams shown above.