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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. Write the electronic configuration of Zn^(2+) ion ?

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  2. State Hund's rule.

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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. Write the electronic configuration of an element atomic number 25 ?

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  5. Give the values of 'n' and 'l' for each of the subshell :

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  6. Write the quantum number of an electron present in 3d-orbital.

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  7. An atom has its K and L shells completely filled and seven electrons i...

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  8. State and briefly explain Aufbau's principle.

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  9. Calculate the energy of photon having frequency of 1.0xx10^15 sec^(-1)...

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  10. Differentiate between orbit and orbital.

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  11. State the number of neutrons and protons present in C^12 and C^14.

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  12. An atom has its K and L shells completely filled and five electrons in...

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  13. Name an element, the atom of which contains maximum number of unpaired...

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  14. Give the quantum numbers of the electron present in hydrogen atom.

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  15. An atom has its K and L shells completely filled and six electrons in ...

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  16. The electronic configuration of an atom is 1s^2 2s^2 2p^6 3s^2. Determ...

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  17. The wavelength of blue light is 4800overset@A , calculate the frequenc...

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  18. The frequency of the strong yellow line in the spectrum of sodium is 5...

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  19. State Hund's rule of maximum multiplicity.

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  20. Give the shape of d-orbitals.

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