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What do you mean by saying that energy o...

What do you mean by saying that energy of electron is quantized?

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This mean that the electrons in an atom have only definite values of energies.
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MODERN PUBLICATION-STRUCTURE OF ATOM-Revision Exercises (Very Short Answer Questions)
  1. How many sub-levels are there in M shell ? What are their designations...

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  2. Give the sets of quantum number that describe an electron in a 3p orbi...

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  3. The electronic configuration of chromium (Z=24) is:

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  4. An atom of an element has 19 electrons. What is the total number of p-...

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  5. What is the sequence of energies of 3s, 3p and 3d-orbitals in (i) a ...

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  6. According to which principle an orbital cannot have more than two ele...

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  7. Describe the orbital with following quantum numbers: (i) n=3, l=2 ...

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  8. If the principal quantum has a value of 3, what are the permitted ...

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  9. What is the relation between the shapes of 3d(xy) and 3d(x^2y^2) orbit...

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  10. How many electron are present in 3d orbitals in chromium (Z = 24) ?

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  11. If a quantum number l has value of 2, what are the permitted values of...

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  12. The maximum number of electrons in s, p and d-subshell are

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  13. Which energy levels do not have p-orbital ?

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  14. What do you mean by saying that energy of electron is quantized?

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  15. Out of electron and proton which one will have, a higher velocity to p...

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  16. What is the toal number of orbitals associated with the principal quan...

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  17. Arrange the following in order of increasing energy for hydrogen atom...

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  18. How many electrons in calcium have l = 0 ?

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  19. What is Hund's rule of maximum multiplicity ? Explain by taking examp...

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  20. (a) Define Pauli Exclusion Principle . (b) Write the electronic con...

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