Please explain answers and show formulas used and label units Fluorescent molecu

Question

Please explain answers and show formulas used and label units

Fluorescent molecules can be used to track biomolecular events one molecule at a time.
Fluorescence is very similar to the atomic transitions studied in lecture. Consider a
fluorescent molecule where the electron that participates in fluorescence has ground state energy of
-4.6 eV. When the molecule is illuminated with light this electron is excited up to a state
with energy -2.3 eV.

1) (3 pt) When the electron drops back to the ground state, what wavelength photon is
given off ?

2) (1 pt) What color is this?

Explanation / Answer

energy emitted = hc/ lambda = energy absorbed by photom

or, 2.3 *1.6*10^-19 = 6.6*10^-34 * 3*10^8 / lambda

so, lambda = wavelength of the emitted photons = 5.38 * 10^-7 m

so, its green color

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