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Unformatted text preview: e up the slit with the
light, then look to the scale on
the right. You should see the
colored lines under the scale. Slit that
Slit
allows light
inside
inside Eyepiece 17 Scale Light Spectrum Lab! 18 19 Atomic Spectra
Atomic Spectra
One view of atomic structure in early 20th
One
century was that an electron (e) traveled
about the nucleus in an orbit.
about + Electron
orbit 20 Atomic Spectra and Bohr
Atomic Spectra and Bohr
Bohr said classical view is wrong.
Bohr
Need a new theory — now called
QUANTUM or WAVE MECHANICS.
QUANTUM
WAVE
e can only exist in certain discrete
eorbits
orbits
e is restricted to QUANTIZED
eQUANTIZED
energy state (quanta = bundles of
energy)
energy) 21 Quantum or Wave Mechanics
Schrodinger applied idea of eSchrodinger
behaving as a wave to the
problem of electrons in atoms.
problem
He developed the WAVE
He EQUATION
EQUATION
Solution gives set of math
Solution
expressions called WAVE
E. Schrodinger
FUNCTIONS, Ψ
18871961
Each describes an allowed energy
Each
state of an estate He...
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 Fall '12
 DVG
 Electron, AP Chemistry

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