What is the frequency of light given off by an electron that loses #4.05 x 10^-19# J of energy as it moves from the 2nd to the 1st energy level?

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Answer 1 · 2016-12-05T17:46:20

The frequency is #=6.1*10^14 Hz#

We use the equation

#E=hnu#

where

#E=#energy #=4.05*10^(-19)#

#nu=#frequency of light

#h=#Planck's constant #=6.6*10^(-34)#

#nu=E/h=(4.05*10^(-19))/(6.6*10^(-34))=0.61*10^15 Hz#

#=6.1*10^14 Hz#