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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.
पर्याय
a and b
a and c
b, c and d
c and d
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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.
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संबंधित प्रश्न
Draw a neat, labelled energy level diagram for H atom showing the transitions. Explain the series of spectral lines for H atom, whose fixed inner orbit numbers are 3 and 4 respectively.
How many electrons in an atom may have the following quantum numbers?
n = 3, l = 0
On the basis of Bohr's theory, derive an expression for the radius of the nth orbit of an electron of the hydrogen atom.
Using Bohr’s postulates, derive the expression for the frequency of radiation emitted when electron in hydrogen atom undergoes transition from higher energy state (quantum number ni) to the lower state, (nf).
When electron in hydrogen atom jumps from energy state ni = 4 to nf = 3, 2, 1, identify the spectral series to which the emission lines belong.
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.
Answer the following question.
Calculate the orbital period of the electron in the first excited state of the hydrogen atom.
What is the energy in joules released when an electron moves from n = 2 to n = 1 level in a hydrogen atom?
Which of the following is/are CORRECT according to Bohr's atomic theory?
(I) Energy is emitted when electron moves from a higher stationary state to a lower one.
(II) Orbits are arranged concentrically around the nucleus in an increasing order of energy.
(III) The energy of an electron in the orbit changes with time.
For an electron in the second orbit of hydrogen, what is the moment of momentum as per the Bohr's model?
According to Bohr's model of hydrogen atom, an electron can revolve round a proton indefinitely, if its path is ______.
If the radius of first electron orbit in hydrogen atom be r then the radius of the fourth orbit ill be ______.
Using Bohr's postulates derive the expression for the radius of nth orbit of the electron.
The angular momentum of electron in nth orbit is given by
The binding energy of a H-atom, considering an electron moving around a fixed nuclei (proton), is B = `- (Me^4)/(8n^2ε_0^2h^2)`. (m = electron mass). If one decides to work in a frame of reference where the electron is at rest, the proton would be moving around it. By similar arguments, the binding energy would be
B = `- (Me^4)/(8n^2ε_0^2h^2)` (M = proton mass)
This last expression is not correct because ______.
If a proton had a radius R and the charge was uniformly distributed, calculate using Bohr theory, the ground state energy of a H-atom when (i) R = 0.1 Å, and (ii) R = 10 Å.
The number of times larger the spacing between the energy levels with n = 3 and n = 8 spacing between the energy level with n = 8 and n = 9 for the hydrogen atom is ______.
According to Bohr atom model, in which of the following transitions will the frequency be maximum?
If 13.6 eV energy is required to ionize the hydrogen atom, then the energy required to remove an electron from n = 2 is ______.
Write the ionisation energy value for the hydrogen atom.
On the basis of Bohr's theory, derive an expression for the radius of the nth orbit of an electron of hydrogen atom.
