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After 3d-su level is completely filled t...

After 3d-su level is completely filled the differentiating electron enters into ….. sub level.

A

4s

B

4p

C

4f

D

5s

Text Solution

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The correct Answer is:
B
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AAKASH SERIES-ATOMIC STRUCTURE-Objective exercise - 1
  1. The (n+l) value for 4f sub-shell is

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  2. The energy of the electron in the hydrogen atom is given by the expres...

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  3. After 3d-su level is completely filled the differentiating electron en...

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

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  5. The configuration 1s^(2)2s^(2) 2p^(6)3s^(2)3p^(3) corresponds to

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  6. To which element does the following electronic configuration correspon...

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  7. The total number of 'p' electrons present in phosphorous atom is

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  8. Element with atomic number 38, belongs to

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  9. Among N^(-3), O^(-2), F^(-), Na^(+), Mg^(+2) and Al^(+3) (a) What is...

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  10. The number of unpaired electrons in the valance shell of silicon is

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  11. a) An orbital can hold only two electrons b) An orbital must have e...

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  12. Which of the following electronic configuration corresponds to an iner...

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  13. The rule that explain the reason for chromium to have [Ar]3d^(5)4s^(1)...

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  14. Which of the following configuration is not possible ?

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  15. Which of the following ions is not isoelectronic with O^(2-)

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  16. Number of valence electrons in carbon is

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  17. The number of unpaired electrons in Fe^(3+) ion are

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  18. The number of unpaired electrons in 1s^(2) 2s^(2) 2p^(3) is

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  19. Bohr's basic idea of discrete energy levels in atorns and the of Photo...

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  20. The number of d-electrons retained in Fe^(3+) (At. No. of Fe = 26) ion...

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