Atomic Emission Spectroscopy and Flame Tests (HSC SSCE Chemistry): Flashcards
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Atomic emission spectroscopy
Atomic emission spectroscopy
Technique where heated atoms emit light
Min. temp. for electron excitation
Min. temp. for electron excitation
Above 1500°C
Ground state
Ground state
Normal energy level of electrons in an atom
Energy vs wavelength in emission
Energy vs wavelength in emission
Inverse: greater energy = shorter wavelength
Why emission spectra are unique
Why emission spectra are unique
Each element has different electron energy levels
Sodium flame colour
Sodium flame colour
Yellow
Potassium flame colour
Potassium flame colour
Light purple (lilac)
Calcium flame colour
Calcium flame colour
Brick-red (orange-red)
Barium flame colour
Barium flame colour
Pale green (apple green)
Copper flame colour
Copper flame colour
Blue-green