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An electron has principal quantum number...

An electron has principal quantum number 3. The number of its (i) shells and (ii) orbitals would be respectively

A

3 and 5

B

3 and 7

C

3 and 6

D

2 and 5

Text Solution

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If the value of n is 3, then its shell will be 3 and number of orbitals will be `n ^(2)` that is `3 ^(2) = 9.`
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OMEGA PUBLICATION-STRUCTURE OF ATOM -MULTIPLE CHOICE QUESTIONS (MCQ s)
  1. The total number of orbitals possible for the quantum number n is

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  2. The four quantum numbers of the valence electron of potassium are

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  3. An electron has principal quantum number 3. The number of its (i) shel...

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  4. The correct set of quantum numbers for a 4d electron is

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  5. No two electrons in an atom will have all the four quantum numbers sam...

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  6. The correct order of increasing energy of atomic orbitals is

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  7. The energy of an electron in nth orbit of hydrogen atom is

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  8. The triad of nuclei that is isotonic is

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  9. Bohr's model can explain

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  10. If the value of l = 2, what will be the value of principal quantum num...

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  11. Rutherford's experiment on scattering of alpha particles showed for th...

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  12. 3d-orbitals have

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  13. Number of unpaired electrons in the electronic configuration 1s ^(2) ,...

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  14. The two electrons in an orbital have different

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  15. The principal which gives a way to fill the electrons in the available...

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  16. Number of unpaired electrons in Nat is

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  17. f -sub-shell is characterised by:

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  18. When the 3d orbital is complete, the new electron will enter the

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  19. Energy of atomic orbitals in a particular shell is in the order

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  20. The set of quantum numbers not applicable for an electron in an atom i...

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