What is the calculated energy (in kJ) of light emitted in the hydrogen spectrum, when an electron falls from the 4th energy level to the 3rd energy level?

What is the calculated energy (in kJ) of light emitted in the hydrogen

1.	What is the calculated energy (in kJ) of light emitted in the hydrogen spectrum, when an electron falls from the 4th energy level to the 3rd energy level?
Answer» The EXPRESSION for the wavelength of RADIATION is, λ1 =R( n 12 1 − n 22 1 )Substitute values in the above expression,λ1 =109677×( 2 2 1 − 4 2 1 )=109677×( 41 − 161 )=109677×( 6412 )λ=4.86×10 −5 cm=486×10 −9 m=486nm.The LINE belongs to bluish green colour.