Question

The frequency of spectral line obtained when the electron in n =3 of hydrogen atom drops to the ground state is ​

Answer 1

Answer:

Explanation:

We know that, frequency=velocity of light÷wavelength,,,N1=1,,N2=3,, atomic number is 1 for hydrogen

Wavelength is inversely proportional to wave number

Explanation:

Wave number=redberg number×squareof atomic number (1/N1square-1/N2 square)

Wave number=Rh(1/1-1/9)=Rh(9-1/9),,=Rh(8/9),,,(1/Rh=912A°)

Wavelength=1/wave number

Wavelength=1/Rh×9/8=912×9/8=1026A°

Frequency=3×10*8/1026×10*-10

Frequency=2.99×10power plus 15