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Q. No.The energy of electron in the ground state \((\text{n}=1)\) for \(\text{He}^+\) ion is-\(\text{x}J,\) then that for an electron in \(\text{n}=2\) state for \(\text{Be}^{3+}\) ion in \(\text{J}\) is :
1. \(-\frac x9\)
2. \(-4x\)
3. \(-\frac 49x\)
4. \(-x\)
1. \(-\frac x9\)
2. \(-4x\)
3. \(-\frac 49x\)
4. \(-x\)
Subtopic: Bohr's Theory |
65%
From NCERT
NEET - 2024
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Given below are two statement:
In the light of the above Statements,, choose the correct answer from the options given below:
1. Both Statement I and Statement II are true
2. Both Statement I and Statement II are false
3. Statement I is true but Statement II is false
4. Statement I is false but Statement II is true
| Statement I: | The energy of the \(\mathrm{He}^{+}\) ion in \(n=2\) state is same as the energy of H atom in \(n=1\) state |
| Statement II: | It is possible to determine simultaneously the exact position and exact momentum of an electron in \(\mathrm{H}\) atom. |
In the light of the above Statements,, choose the correct answer from the options given below:
1. Both Statement I and Statement II are true
2. Both Statement I and Statement II are false
3. Statement I is true but Statement II is false
4. Statement I is false but Statement II is true
Subtopic: Bohr's Theory | Heisenberg Uncertainty Principle |
71%
From NCERT
NEET - 2024
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Given below are two statements:
In the light of the above statements, choose the correct answer from the options given below:
1. Statement I is true but Statement II is false
2. Statement I is false but Statement II is true
3. Both Statement I and Statement II are true
4. Both Statement I and Statement II are false
| Statement I: | The Balmer spectral line for H atom with lowest energy is located at \(\frac 5{36}\mathrm{ R_H~ cm^{-1}}\) (\(\mathrm{R_H}\) = Rydberg constant) |
| Statement II: | When the temperature of blackbody increases, the maxima of the curve (intensity versus wavelength) shifts to shorter wavelength. |
1. Statement I is true but Statement II is false
2. Statement I is false but Statement II is true
3. Both Statement I and Statement II are true
4. Both Statement I and Statement II are false
Subtopic: Bohr's Theory | Planck's Theory |
73%
From NCERT
NEET - 2024
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In hydrogen atom, what is the de Broglie wavelength of an electron in the second Bohr orbit is: [Given that Bohr radius, ]
1. 211.6 pm
2. 211.6 pm
3. pm
4. 105.8 pm
Subtopic: Bohr's Theory |
NEET - 2019
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