Bohr Model & Hydrogen Spectrum: JEE Questions & Solutions

Given below are two statements: Statement I: When an electric discharge is passed through gaseous hydrogen, the hydrogen molecules…

Consider the following spectral lines for atomic hydrogen: A. First line of Paschen series B. Second line of Balmer series C. Third line of…

The energy required by electrons, present in the first Bohr orbit of hydrogen atom, to be excited to second Bohr orbit is 1.5cm J mol^-1.…

The energy of first (lowest) Balmer line of H atom is x J. The energy (in J) of second Balmer line of H atom is:

Which of the following statements regarding the energy of the stationary state is true in the following one-electron systems ?

The hydrogen spectrum consists of several spectral lines in Lyman series (L1, L2, L3; L1 has lowest energy among Lyman series). Similarly,…

The wavelength of spectral line obtained in the spectrum of Li^2+ ion, when the transition takes place between two levels whose sum is 4…

The wave numbers of three spectral lines of hydrogen atom are considered. Identify the set of spectral lines belonging to the Balmer…

Radius of the first excited state of Helium ion is given as: a0 = radius of first stationary state of hydrogen atom.

Heat treatment of muscular pain involves radiation of wavelength of about 900 nm. Which spectral line of H atom is suitable for this?…

Given below are two statements about X-ray spectra of elements: Statement (I): A plot of (frequency of X-rays emitted) vs atomic mass is a…

For hydrogen atom, the orbital/s with lowest energy is/are:

According to Bohr's model of hydrogen atom, which of the following statement is incorrect?

Which of the following postulate of Bohr's model of hydrogen atom in not in agreement with quantum mechanical model of an atom ?

The energy of an electron in first Bohr orbit of H-atom is -13.6 eV. The magnitude of energy value of electron in the first excited state…

Match List I with List II: List I (Spectral Series for Hydrogen) | List II (Spectral Region) A. Lyman | I. Infrared region B. Balmer | II.…

Given below are two statements: Statement-I: The orbitals having the same energy are called as degenerate orbitals. Statement-II: In…

Number of spectral lines obtained in He^+ spectra, when an electron makes a transition from the fifth excited state to the first excited…

The radius of the 2^ nd orbit of Li^2+ is x. The expected radius of the 3^ rd orbit of Be^3+ is:

The shortest wavelength of hydrogen atom in the Lyman series is. The longest wavelength in the Balmer series of He^+ is:

Assume that the radius of the first Bohr orbit of hydrogen atom is 0.6 Å. The radius of the third Bohr orbit of He^+ is …. picometer…

Which transition in the hydrogen spectrum would have the same wavelength as the Balmer type transition from n = 4 to n = 2 of He^+ spectrum?

The number of following statements which is/are incorrect is:

The electron in the nth orbit of Li^2+ is excited to (n + 1)th orbit using the radiation of energy 1.47 10^-17 J. The value of n is. %…

Given below are two statements: Statement I: According to Bohr’s model of hydrogen atom, the angular momentum of an electron in a given…