Q1. What is the ionization energy of hydrogen in eV? (2019)
Solution:
The ionization energy of hydrogen is 13.6 eV, which is the energy required to remove the electron from the ground state.
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Q2. What is the significance of the Heisenberg Uncertainty Principle in atomic physics? (2023)
Solution:
The Heisenberg Uncertainty Principle states that it is impossible to simultaneously know the exact position and momentum of a particle.
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Q3. What is the significance of the Pauli Exclusion Principle in atomic structure? (2019)
Solution:
The Pauli Exclusion Principle states that no two electrons in an atom can have the same set of quantum numbers.
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Q4. What is the wavelength of light emitted when an electron transitions from n=3 to n=1 in a hydrogen atom? (2020)
Solution:
Using the Rydberg formula, the wavelength for the transition from n=3 to n=1 can be calculated to be approximately 102.6 nm.
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Q5. What is the main reason for the stability of the electron orbits in an atom according to the Bohr model? (2019)
Solution:
In the Bohr model, electrons occupy quantized energy levels, which leads to stable orbits around the nucleus.
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Q6. What is the ground state electron configuration of an oxygen atom? (2023)
Solution:
Oxygen has 8 electrons, and its ground state electron configuration is 1s² 2s² 2p⁴.
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Q7. Which of the following describes the emission spectrum of hydrogen? (2023)
Solution:
The emission spectrum of hydrogen is a line spectrum, consisting of discrete lines corresponding to specific wavelengths of light emitted by electrons transitioning between energy levels.
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Q8. What is the ionization energy of an atom? (2023)
Solution:
Ionization energy is defined as the energy required to remove an electron from an atom in its gaseous state.
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Q9. In the context of atomic structure, what does the term 'quantum leap' refer to? (2022)
Solution:
A 'quantum leap' refers to the transition of an electron between discrete energy levels in an atom.
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Q10. What is the main limitation of the Rutherford model of the atom? (2019)
Solution:
The Rutherford model fails to explain why electrons do not spiral into the nucleus, thus not accounting for atomic stability.
