NEET Test Series from KOTA - 10 Papers In MS WORD
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CHXI02:STRUCTURE OF ATOM
307180
Bohr’s model is not able to account for which of the following.
1 Stability of atom.
2 Spectrum of neutral helium atom.
3 Energy of free electron at rest.
4 Calculation of radii of the stationary states.
Explanation:
Bohr model can only explain one electron system.
CHXI02:STRUCTURE OF ATOM
307181
Assertion : Bohr model fails in case of multielectron species. Reason : It does not mention electron-electron interactions.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Bohr's atomic model, while successful for single-electron hydrogen atoms, fell short with multi-electron systems due to its simplicity, unable to address the intricate interactions and energy levels in more complex atoms. So option (2) is correct.
CHXI02:STRUCTURE OF ATOM
307182
Assertion : Fine lines are observed in spectra if an atom is placed in a magnetic field. Reason : Degenerate orbitals split in the presence of magnetic field.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Electron motion generates an electric field, leading to a magnetic field affecting subshell electrons. In an external magnetic field, degenerate orbitals split into slightly different energy levels, causing spectral line splitting.So option (1) is correct.
CHXI02:STRUCTURE OF ATOM
307183
The splitting of spectral lines in presence of electric field is known as
1 Stark effect
2 Zeeman effect
3 Compton effect
4 Photoelectric effect
Explanation:
The splitting of spectral lines in presence of electric field is known as Stark effect and in case of magnetic field is known as Zeeman effect.
307180
Bohr’s model is not able to account for which of the following.
1 Stability of atom.
2 Spectrum of neutral helium atom.
3 Energy of free electron at rest.
4 Calculation of radii of the stationary states.
Explanation:
Bohr model can only explain one electron system.
CHXI02:STRUCTURE OF ATOM
307181
Assertion : Bohr model fails in case of multielectron species. Reason : It does not mention electron-electron interactions.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Bohr's atomic model, while successful for single-electron hydrogen atoms, fell short with multi-electron systems due to its simplicity, unable to address the intricate interactions and energy levels in more complex atoms. So option (2) is correct.
CHXI02:STRUCTURE OF ATOM
307182
Assertion : Fine lines are observed in spectra if an atom is placed in a magnetic field. Reason : Degenerate orbitals split in the presence of magnetic field.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Electron motion generates an electric field, leading to a magnetic field affecting subshell electrons. In an external magnetic field, degenerate orbitals split into slightly different energy levels, causing spectral line splitting.So option (1) is correct.
CHXI02:STRUCTURE OF ATOM
307183
The splitting of spectral lines in presence of electric field is known as
1 Stark effect
2 Zeeman effect
3 Compton effect
4 Photoelectric effect
Explanation:
The splitting of spectral lines in presence of electric field is known as Stark effect and in case of magnetic field is known as Zeeman effect.
307180
Bohr’s model is not able to account for which of the following.
1 Stability of atom.
2 Spectrum of neutral helium atom.
3 Energy of free electron at rest.
4 Calculation of radii of the stationary states.
Explanation:
Bohr model can only explain one electron system.
CHXI02:STRUCTURE OF ATOM
307181
Assertion : Bohr model fails in case of multielectron species. Reason : It does not mention electron-electron interactions.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Bohr's atomic model, while successful for single-electron hydrogen atoms, fell short with multi-electron systems due to its simplicity, unable to address the intricate interactions and energy levels in more complex atoms. So option (2) is correct.
CHXI02:STRUCTURE OF ATOM
307182
Assertion : Fine lines are observed in spectra if an atom is placed in a magnetic field. Reason : Degenerate orbitals split in the presence of magnetic field.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Electron motion generates an electric field, leading to a magnetic field affecting subshell electrons. In an external magnetic field, degenerate orbitals split into slightly different energy levels, causing spectral line splitting.So option (1) is correct.
CHXI02:STRUCTURE OF ATOM
307183
The splitting of spectral lines in presence of electric field is known as
1 Stark effect
2 Zeeman effect
3 Compton effect
4 Photoelectric effect
Explanation:
The splitting of spectral lines in presence of electric field is known as Stark effect and in case of magnetic field is known as Zeeman effect.
307180
Bohr’s model is not able to account for which of the following.
1 Stability of atom.
2 Spectrum of neutral helium atom.
3 Energy of free electron at rest.
4 Calculation of radii of the stationary states.
Explanation:
Bohr model can only explain one electron system.
CHXI02:STRUCTURE OF ATOM
307181
Assertion : Bohr model fails in case of multielectron species. Reason : It does not mention electron-electron interactions.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Bohr's atomic model, while successful for single-electron hydrogen atoms, fell short with multi-electron systems due to its simplicity, unable to address the intricate interactions and energy levels in more complex atoms. So option (2) is correct.
CHXI02:STRUCTURE OF ATOM
307182
Assertion : Fine lines are observed in spectra if an atom is placed in a magnetic field. Reason : Degenerate orbitals split in the presence of magnetic field.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Electron motion generates an electric field, leading to a magnetic field affecting subshell electrons. In an external magnetic field, degenerate orbitals split into slightly different energy levels, causing spectral line splitting.So option (1) is correct.
CHXI02:STRUCTURE OF ATOM
307183
The splitting of spectral lines in presence of electric field is known as
1 Stark effect
2 Zeeman effect
3 Compton effect
4 Photoelectric effect
Explanation:
The splitting of spectral lines in presence of electric field is known as Stark effect and in case of magnetic field is known as Zeeman effect.
