Question

Applying Bohr's model calculate the energy emitted when an electron in an H atom makes a transition from third energy level to first energy level

Answer 1

$\huge{\mathfrak{\purple{Question}}}$

Applying Bohr's model calculate the energy emitted when an electron in an H atom makes a transition from third energy level to first energy level.

$\huge{\mathfrak{\purple{Answer}}}$

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

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