Atomic Spectra

Why would any energy be released if electrons are exchanged with Same energy levels?

State Balmer equation.

What is Brackett series?

If the limit wavelength of the Balmer series is ${\lambda }_B$, then the series limit wavelength of the Pfund series is what?

If the series limit frequency of the Lyman series is $v_L$, then what is the series limit frequency of the Pfund series?

Who did experimental discovery of the Pfund series?

Pfund series will come after Lyman series.

What is order of pfund series in atomic sptectra?

The frequency of the photon emitted for ${\mathrm{H}}_{\alpha }$ transition in the Balmer series is $4.57\times {10}^{14} \mathrm{Hz}$.

What is the shortest wavelength present in the Paschen series of spectral lines?

Find the shortest wavelength in Paschen series, if the longest wavelength in Balmer series is $6563 \mathrm{\AA }$.

Find the longest wavelength in Paschen series.

Draw a neat labelled energy level diagram and explain the different series of spectral lines for hydrogen atom.

First line of Balmer series has wavelength $6564 \mathrm{\AA }$. Find out Rydberg constant and wave number.

Doubly ionised Lithium atom is hydrogen like whose atomic number is $3$ then-

(i) find out the wavelength of radiation required to excite an electron from first orbit to third orbit.

(ii) how many lines will be observed in emission spectrum of the excited system?

In a sample of hydrogen gas most of the atom are in $n=1$ energy level. When visible light passes through it some spectral lines are absorbed. Lines of which series (Lyman or Balmer) are most absorbed and why?

For Lyman series of hydrogen the minimum and maximum wavelengths are 

Which of the following alternative therapies involves the use of essential oils for healing purposes?

Which psychological disorder involves unwanted repetitive thoughts and actions?

Which type of thematic map is designed to represent the movement of people, goods, or ideas?