Question

Determine the wavelength of light emitted or absorbed by a hydrogen atom when an electron transitions from n = 2 to n = 8. Give your answer in units of nm.

Answer 1

electron transition from n = 2 to n₂ = 8 * = 1.09671x101 Chom ) m! = 1.09677 X10% ( ) m * 1.09cm) xlo" ( ) = 1.09671x10 (4 ) m = ,09677x107x 15 m la la 64 x = 64 1.09677 x 10x15 m 3.89x107m as Im= 107 nm then 3.89x10 m = 3.89 x 10 x 10 nm = 3.89 x 10² nm - 7 hence x = 389 nm Menie by a 389nm is the wavelength of H atom when an elechon light absorbed hansition from no to n-8.