Question

Applying Bohr's model calculate the wavelength of the radiation emitted when an electron in a hydrogen atom makes a transition from fourth energy level to first energy level. plank's constant=6.63*10 -34

Answer 1

Energy of an electron in Hydrogen atom in Bohr's model :
         E = - 13.6 /n²  eV   (electron volts)

Transition from n = 4 to n = 1

=>  ΔE of transition = - 13.6 /4² + 13.6 /1² 
                                = + 12.25 eV

Wavelength of radiation emitted  = λ
=>  h c/λ = ΔE 
=>  λ = h c / ΔΕ = 6.63 * 10⁻³⁴ * 3 * 10⁸ / (12.25 * 1.6 * 10⁻¹⁹)   meters
         =   101.48 nm

Answer 2

Answer:

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