ATOMIC MODELS

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• Electron Cloud: probability region where an electron<br />

may be found 90% of the time<br />

• More dense closer to nucleus à higher probability

• Electron Cloud: probability region where an electron may be found 90% of the time • More dense closer to nucleus à higher probability

QUANTUM NUMBERS • Four quantum numbers fully describe an electron in the atom • No two electrons can be described by the same four quantum numbers