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Bohr's Atomic Model

Model of atom showing electrons orbiting the nucleus.

Atoms Practice
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Foggy Electrons

Foggy Electrons

Credit: wikimedia commons
Source: http://commons.wikimedia.org/wiki/File:Acadia_NP_fog_2005-1-18.JPG
License: CC BY-NC 3.0


Imagine fog moving in over San Francisco. You see it moving in and know that it is in constant motion, but you cant pinpoint exactly how fast it is moving. You can’t see the particles it is made up of, but like all objects it is made up of matter. This fog just clings to the ground with the attraction of gravity.

This is similar to the design of the electron cloud model of electrons.  Speculated to be moving in waves similar to light, electrons cannot be viewed directly but can be pinpointed in location. Building in the atom orbiting theory, the electrons move at a speed in which they are almost cloud like in state surrounding the atom. Imagine basically, the nucleus with a fog surrounding it. The fog is all of the electrons.

Creative Application:

1. What can you infer about the kinetic energy of the electrons?

2. What was wrong with Bohr’s Model?

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  1. [1]^ Credit: wikimedia commons; Source: http://commons.wikimedia.org/wiki/File:Acadia_NP_fog_2005-1-18.JPG; License: CC BY-NC 3.0

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