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#2 | Bohr's Model
(Physics) > Atoms
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Related Practice Questions :
What is the kinetic energy of the electron in an orbit of radius \(r\) in the hydrogen atom?
(\(e\) = electronic charge)
(\(e\) = electronic charge)
| 1. | \(\dfrac{k e^{2}}{r^{2}}\) | 2. | \(\dfrac{k e^{2}}{2 r}\) |
| 3. | \(\dfrac{k e^{2}}{r}\) | 4. | \(\dfrac{k e^{2}}{2 r^{2}}\) |
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The ionisation potential of hydrogen atom is
1. 13.60 volt
2. 8.24 volt
3. 10.36 volt
4. 14.24 bolt
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Orbital acceleration of electrons is:
1. \(\frac{n^2h^2}{4\pi^2m^2r^3}\)
2. \(\frac{n^2h^2}{4n^2r^3}\)
3. \(\frac{4n^2h^2}{\pi^2m^2r^3}\)
4. \(\frac{4n^2h^2}{4\pi^2m^2r^3}\)
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Out of the following which one is not a possible energy for a photon to be emitted by hydrogen atom according to Bohr's atomic model:
1. 13.6 eV
2. 0.65 eV
3. 1.9 eV
4. 11.1 eV
61%
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The energy of an electron in an excited hydrogen atom is \(-3.4~\text{eV}\). Its angular momentum will be:
(\(h = 6.626\times 10^{-34}\) J-s)
1. \(1.11\times 10^{34}~\text{J-s}\)
2. \(1.51\times 10^{-31}~\text{J-s}\)
3. \(2.11\times 10^{-34}~\text{J-s}\)
4. \(3.72\times 10^{-34}~\text{J-s}\)
(\(h = 6.626\times 10^{-34}\) J-s)
1. \(1.11\times 10^{34}~\text{J-s}\)
2. \(1.51\times 10^{-31}~\text{J-s}\)
3. \(2.11\times 10^{-34}~\text{J-s}\)
4. \(3.72\times 10^{-34}~\text{J-s}\)
70%
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