A beam of monochromatic light is used to excite the electron in `Li^(++)` from the first orbit to the third orbit. The wavelength of monochromatic light is found to be x `xx10^(-10)` m. The value of x is ______
[Given hc=1242 eV nm]

Determine the wavelength of the radiation required to excite the electron in Li^(+ +) from the first to the third Bohr orbit.

Energy required for the electron excitation in Li^(++) from the first to the third Bohr orbit is

Energy required for the electron excitation in Li^(++) from the first to the third Bohr orbit is:

A parallel beam of monochromatic light is incident on a slit of width 0.1 mm. Find the angle in which most of the light is diffracted. Wavelength of light used is 500 nm.

First orbit velocity of electron is 2.1 xx 10^(6) m//s then the velocity of 3rd orbit electron is

A single electron orbits a stationary nucleus of charge + Ze , where Z is a constant and e is the magnitude of electronic charge . It requires 47.2 eV to excite . Find a the value of Z b the energy required to excite the electron from the third to the fourth Bohr orbit. the wavelength of electromagnetic rediation required to remove the electron from the first Bohr orbit to infinity. d Find the KE,PE , and angular momentum of electron in the first Bohr orbit. the redius of the first Bohr orbit [The ionization energy of hydrogen atom = 13.6 eV Bohr radius = 5.3 xx 10^(_11) m , "velocity of light" = 3 xx 10^(-8)jm s ^(-1) , Planck's constant = 6.6 xx 10^(-34)j - s]

(a)Find the wavelength of the radiation required to excited the electron is Li^(++) from the first to the third Bohr orbit (b) How many speciral are obseved in the emission apactrum of the above excited system?

A single electron orbits around a stationary nucleus of charge +Ze , where Z is a constant and e is the electronic charge. It requires 47.2 eV to excited the electron from the second Bohr orbit to the third Bohr orbit. Find (i) the value of Z, (ii) the energy required to excite the electron from the third to the fourth Bohr orbit and (iii) the wavelength of the electromagnetic radiation radiation to remove the electron from the first Bohr orbit to infinity.