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Which is more stable configuration and w...

Which is more stable configuration and why ? `4s^2 3d^9 and 4S^1 4s^10

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MBD PUBLICATION-STRUCTURE OF ATOM-QUESTION TYPE
  1. Give an account of Rutherford's model of the atom. How did Bohr prove ...

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  2. What are quantum numbers ? Describe briefly four quantum numbers ?

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  3. Which is more stable configuration and why ? 4s^2 3d^9 and 4S^1 4s^10

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  4. What is the order of increasing bond angle of the following ? What is ...

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  5. The atomic orbitals are progressively filled in order of increasing en...

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  6. The orbital diagram in which both Pauli's exclusion principle and Hund...

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  7. Who modified Bohr's theory by introducing elliptical orbits for electr...

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  8. The following quantum numbers are possible for how many orbitals ? n...

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  9. The 19th electron of chromium has which of the following sets of quant...

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  10. Which of the following sets of quantum numbers is not possible ?

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  11. Which one of the following pairs of ions have the same electronic conf...

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  12. In a hydrogen atom if the energy of an electron in the ground state is...

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  13. Which of the following ions has the maximum magnetic moment ?

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  14. In hydrogen atom, energy of first excited state is -3.4 eV. Then find ...

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  15. The wavelength associated with a golf ball weighing 200g and moving at...

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  16. The quantum numbers +1/2 and -1/2 for the electron spin represent :

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  17. Identify the least stable among the following

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  18. If the nitrogen atom had electronic configuration is 1s^7, it would ha...

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  19. List the quantum numbers (n and l) of electrons for 3d-orbital.

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  20. Which quantum number specifies the shape of an orbital in an atom ?

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