Advertisements
Advertisements
प्रश्न
An ionised H-molecule consists of an electron and two protons. The protons are separated by a small distance of the order of angstrom. In the ground state ______.
- the electron would not move in circular orbits.
- the energy would be (2)4 times that of a H-atom.
- the electrons, orbit would go around the protons.
- the molecule will soon decay in a proton and a H-atom.
विकल्प
a and b
a and c
b, c and d
c and d
Advertisements
उत्तर
a and c
Explanation:
In a hydrogen atom, electron revolves around a fixed proton nucleus in circular path. This can be explained by the Bohr model. But in the case of ionised H-molecule which consists of two protons in the nucleus and where protons are separated by a small distance of the order of angstrom, cannot be explained by the Bohr model. Hence in this case the ground state the electron would not move in circular orbits, the electron's orbit would go around the protons.
APPEARS IN
संबंधित प्रश्न
State Bohr’s postulate of hydrogen atom which successfully explains the emission lines in the spectrum of hydrogen atom. Use Rydberg formula to determine the wavelength of Hα line. [Given: Rydberg constant R = 1.03 × 107 m−1]
The energy associated with the first orbit in the hydrogen atom is - 2.18 × 10-18 J atom-1. What is the energy associated with the fifth orbit?
Using Bohr's postulates, derive the expression for the orbital period of the electron moving in the nth orbit of hydrogen atom ?
Using Bohr’s postulates, obtain the expression for total energy of the electron in the nth orbit of hydrogen atom.
Write the expression for Bohr’s radius in hydrogen atom ?
The numerical value of ionization energy in eV equals the ionization potential in volts. Does the equality hold if these quantities are measured in some other units?
The Bohr radius is given by `a_0 = (∈_0h^2)/{pime^2}`. Verify that the RHS has dimensions of length.
A beam of light having wavelengths distributed uniformly between 450 nm to 550 nm passes through a sample of hydrogen gas. Which wavelength will have the least intensity in the transmitted beam?
A filter transmits only the radiation of wavelength greater than 440 nm. Radiation from a hydrogen-discharge tube goes through such a filter and is incident on a metal of work function 2.0 eV. Find the stopping potential which can stop the photoelectrons.
Obtain Bohr’s quantisation condition for angular momentum of electron orbiting in nth orbit in hydrogen atom on the basis of the wave picture of an electron using de Broglie hypothesis.
According to Bohr's theory, an electron can move only in those orbits for which its angular momentum is integral multiple of ____________.
According to Bohr's model of hydrogen atom, an electron can revolve round a proton indefinitely, if its path is ______.
According to Bhor' s theory the moment of momentum of an electron revolving in second orbit of hydrogen atom will be.
The ratio of the ionization energy of H and Be+3 is ______.
How will the energy of a hydrogen atom change if n increases from 1 to ∞?
The energy of an electron in the first Bohr orbit of the H-atom is −13.6 eV. The energy value of an electron in the excited state of Li2+ is ______.
What is the energy of an electron in stationary state corresponding to n = 2?
Oxygen is 16 times heavier than hydrogen. Equal volumes of hydrogen and oxygen are mixed. The ratio of speed of sound in the mixture to that in hydrogen is ______.
The radius of the nth orbit in the Bohr model of hydrogen is proportional to ______.
Calculate the radius of the second orbit of He+.
