Advertisements
Advertisements
प्रश्न
What is the minimum energy that must be given to a H atom in ground state so that it can emit an Hγ line in Balmer series. If the angular momentum of the system is conserved, what would be the angular momentum of such Hγ photon?
उत्तर
We know that Hγ spectral line in the Balmer series is formed when an electron falls from n = 5 to n = 1.
Here the electron is in the ground state ie., n = 1 and must be taken to n = 5 for Hγ line.
So the energy of H? = `E_5 - E_1 = (13.6/5^2) - (- 13.6)`
= – 0.54 + 13.6
= 13.06 eV
Since angular momentum, is conserved, so the angular momentum of Hγ = change in angular momentum of the electron
= L5 – L2 – 5h – 2h
= 3h = 3 × 6.63 × 10–34
= 19.89 × 10–34 kg m2/s
APPEARS IN
संबंधित प्रश्न
An electron jumps from fourth to first orbit in an atom. How many maximum number of spectral lines can be emitted by the atom? To which series these lines correspond?
In Balmer series, wavelength of first line is 'λ1' and in Brackett series wavelength of first line is 'λ2' then `lambda_1/lambda_2` is ______.
Let v1 and v3 be the frequency for series limit of Balmer and Paschen series respectively. If the frequency of first line of Balmer series is v2 then, relation between v1 and v2 and v3 is ____________.
In hydrogen spectrum, which of the following spectral series lies in ultraviolet region?
In hydrogen spectrum, the series of lines obtained in the ultraviolet region of the spectrum is ____________.
Each element is associated with a ______.
Determine the series limit of Balmer, Paschen and Brackett series, given the limit for Lyman series is 911.6 Å.
The first three spectral lines of H-atom in the Balmer series are given λ1, λ2, λ3 considering the Bohr atomic model, the wavelengths of the first and third spectral lines `(lambda_1/lambda_3)` are related by a factor of approximately 'x' × 10–1. The value of x, to the nearest integer, is ______.
The frequencies for series limit of Balmer and Paschen series respectively are 'v1' and 'v3'. If frequency of first line of Balmer series is 'v2' then the relation between 'v1', 'v2' and 'v3' is ______.
Find the wavelength and wave number of the first member of the Balmer series in Hydrogen spectrum. (`R =1.097xx10^7m^(-1)`)
