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How to Draw Bohr Diagrams

How to Draw Bohr Diagrams. Bohr ’ s Model of the Atom. Octet Rule – Atoms are stable when there are eight electrons in outermost energy level Bohr: Electrons orbit atom in specific energy levels, like planets orbit the sun. Bohr Diagrams. Find your element on the periodic table.

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How to Draw Bohr Diagrams

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  1. How to Draw Bohr Diagrams

  2. Bohr’s Model of the Atom • Octet Rule – Atoms are stable when there are eight electrons in outermost energy level • Bohr: Electrons orbit atom in specific energy levels, like planets orbit the sun.

  3. Bohr Diagrams • Find your element on the periodic table. • Determine the number of electrons – it is the same as the atomic number for neutral atoms. • This is how many electrons you will draw.

  4. Find out which period (row) your element is in. • Elements in the 1st period have one energy level. • Elements in the 2nd period have two energy levels, and so on. 2nd Period 3rd Period www.chem4kids.com

  5. Bohr Diagrams • Draw a nucleus with the number of protons and neutrons inside. • Carbon is in the 2nd period, so it has two energy levels, or shells. • Draw the shells around the nucleus. 6 p+ 6 no

  6. Bohr Diagrams • Add the electrons. • Carbon has 6 electrons. • The first shell can only hold 2 electrons. 6 p+ 6 no

  7. Bohr Diagrams • Since you have 2 electrons already drawn, you need to add 4 more. • These go in the 2nd shell. • Add one at a time -starting on the right side and going counter clock-wise. 6 p+ 6 no

  8. Bohr Diagrams • Check your work. • You should have 6 total electrons for Carbon. • Only two electrons can fit in the 1st shell. • The 2nd shell can hold up to 8 electrons. • The 3rd shell can hold 18, but the elements in the first few periods only use 8 electrons. 6 p+ 6 no

  9. Bohr Diagrams Try the following elements on your own: • H • He • O • Al • Ne • K 6 p+ 6 no

  10. Bohr Diagrams Try the following elements on your own: • H – 1 electron • He • O • Al • Ne • K 1 p+ 0 no

  11. Bohr Diagrams Try the following elements on your own: • H • He - 2 electrons • O • Al • Ne • K 2 p+ 2 no

  12. Bohr Diagrams Try the following elements on your own: • H • He • O - 8 electrons • Al • Ne • K 8 p+ 8 no

  13. Bohr Diagrams Try the following elements on your own: • H • He • O • Al - 13 electrons • Ne • K 13 p+ 14 no

  14. Bohr Diagrams Try the following elements on your own: • H • He • O • Al • Ne - 10 electrons • K 10 p+ 10 no

  15. Bohr Diagrams Try the following elements on your own: • H • He • O • Al • Ne • K - 19 electrons 19 p+ 20 no

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