Part 1

The wavelength of the first line of the Balmer series of hydrogen atom is λ. The wavelength of the corresponding line line of doubly ionized lithium atom is The wavelength of the first line of the Balmer series of hydrogen atom is λ. The wavelength of the corresponding line line of doubly ionized lithium atom [...]

In terms of Rydberg’s constant R, the wave number of the first Balmer line is In terms of Rydberg's constant R the wave number of the first Balmer line is June 9, 2021 Category: Cengage NEET by C.P Singh , Chapter 15 - Properties of Matter ,

The ratio of longest wavelength and the shortest wavelength observed in the five spectral series of emission spectrum of hydrogen is The ratio of longest wavelength and the shortest wavelength observed in the five spectral series of emission spectrum of hydrogen is June 9, 2021 Category: Cengage NEET by C.P Singh , Chapter 15 - [...]

The ratio of longest wavelength and the shortest wavelength of the Lyman series is approximately The ratio of longest wavelength and the shortest wavelength of the Lyman series is approximately June 9, 2021 Category: Cengage NEET by C.P Singh , Chapter 15 - Properties of Matter ,

The electron in the hydrogen atom jumps form excited state (n=3) to its ground state (n=1) and the photons thus emitted irradiate a photosensitive material. If the work function of the material is 5.1eV, the stopping potential is estimated to be: electron makes transition from n=4 to n=1 level. Recoil momentum of the H atom [...]

An electron is in an excited state in a hydrogen-like atom. It has a total energy of -3.4 eV. The kinetic energy of the electron is E and its de Broglie wavelength is λ. An electron is in an excited state in a hydrogen-like atom. It has a total energy of -3.4 eV. The kinetic [...]

Light from a discharge tube containing hydrogen atoms falls on the surface of a piece of sodium. The kinetic energy of the fastest photo electrons emitted from from sodium is 0.73eV . The work function for sodium is 1.82eCV electron makes transition from n=4 to n=1 level. Recoil momentum of the H atom will be [...]

Imagine an atom made up of a proton and a hypothetical particle of double the mass of the electron but having the same charge as the electron. Apply the Bohr atom model and consider all possible transitions of this hypothetical particle to the first exited level . The longest wavelength photon that will be emitted [...]

A hydrogen atom in a state having a binding energy of 0.85 eV makes transition to a state with excitation energy 10.2 eV. The quantum number n of the upper and the lower energy states are A hydrogen atom in a state having a binding energy of 0.85 eV makes transition to a state with [...]

The ionisation potential of hydrogen atom is -13.6 ev an electron the ground state of a hydrogen atom absorbs a photon of energy 12.75 eV. How many different spectral lines can one expert when the electron make a downward transition Of the following transitions in a hydrogen atom the one which gives an absorption line [...]