10/1/2014 page 15 in isnsciencewithmrharvey.weebly.com/.../the_bohr_model.pdf · comparing atomic...
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10/1/2014
Page 15 in ISN
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Remember him?
He’s the one who made the discovery that the protons/neutrons were in the center of the atom (nucleus) and the electrons were on orbits surrounding the electron.
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Let’s try Oxygen. Oxygen’s Atomic #
is 8, so it has 8 protons.
How many electrons does it have?
Remember: Protons and Electrons are balanced.
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Oxygen has 8 Protons, so it also has 8 electrons
Since only 2 electrons fit in the first level, the remaining 6 electrons are place in the 2nd energy level.
How many open spots are there for electrons to fill in the outer energy level of Oxygen?
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Can you draw Nitrogen using the Bohr model?
How many electrons does Nitrogen have in it’s outer-most energy level?
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Can you draw Neon using the Bohr model?
How many electrons does Neon have in it’s outer-most energy level?
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Can you draw Silicon using the Bohr model?
How many electrons does Silicon have in it’s outer-most energy level?
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Those electrons that are on the outer-most energy level are called valence electrons.
They have a lot to do with which atoms bond, or connect/interact, with other atoms.
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The Electron Dot Model takes those valence electrons and shows them surrounding the element’s Symbol. Like Below:
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Bohr Model Electron-Dot
Model
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Take the next few minutes to work on the Comparing Atomic Models exercise.
First draw the Bohr Model for each element, then use that to draw the Electron-Dot Diagram.
When finished with that side, flip over and answer as many of the questions as you can…(#3 and #6 are challenging)