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Which of the following electronic config...

 Which of the following electronic configuration corresponds to an inert gas?

A

`1s^(2)2s^(2) 2p^(5)`

B

`1s^(2)2s^(2) 2p^(6)`

C

`1s^(2) 2s^(2) 2p^(6) 3s^(1)`

D

None

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The correct Answer is:
B
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AAKASH SERIES-ATOMIC STRUCTURE-Objective exercise - 1
  1. The number of unpaired electrons in the valance shell of silicon is

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

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

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

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  5. Which of the following configuration is not possible ?

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

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  7. Number of valence electrons in carbon is

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

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

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

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

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  12. Which of the following is the correct electronic configuration of Fe^(...

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  13. The configuration of chromium atom in ground state is

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

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

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  16. Which of the following is not a fundamental particle ?

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  17. A neutral atom (At.no. gt 1) has

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  18. The study of discharge of electricity through gases led to the discove...

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  19. Electron is a particle having a

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  20. The value of e/m for an electron is

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