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Worksheet 17: Lewis electron-dot diagrams Topic 4

Set A: Drawing electron-dot diagrams Objective: To test your ability to draw Lewis electron-dot
diagrams for atoms, ions and compounds

Define the following:
Electron-dot diagram

Draw electron-dot diagram for these atoms, ions and compounds.
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For formulas with two or more atoms (#9 – 20) use and x to distinguish electrons of the two atoms.

1. Francium 2. Boron 3. Selenium 4. Fluorine 5. Argon

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6. Beryllium ion 7. Nitrogen ion 8. Iodine ion

9. Lithium bromide 10. Barium Chloride 11. Potassium sulfide

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12. Iodine (I2) 13. Oxygen (O2) 14. Nitrogen (N2)

Need help? Study Book pg 86 – 89 Set 27 - 33

15. Hydrogen chloride (HCl) 16. Hydrogen fluoride (HF) 17. Ammonia (NH3)

18. Methane (CH4) 19. Carbon tetrafluoride (CF4) 20. Carbon dioxide(CO2)

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