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 $=6.6*10^(-34)$

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

$=6.1*10^14 Hz$

What is the frequency of light given off by an electron that loses 4.05 x 10^-194.05 x 10^-19 J of energy as it moves from the 2nd to the 1st energy level?