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Which one is the correct outer configura...

Which one is the correct outer configuration of chromium.

A

B

C

D

Text Solution

Verified by Experts

The correct Answer is:
C
`Cr_(24)=(Ar)3d^(5)4s^(1)` electronic configuration because half filled orbitals are more stable than other orbitals.
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ERRORLESS-STRUCTURE OF ATOM-PAST YEARS QUESTIONS
  1. The statements. (i) In filling a group of orbitals of equal energy, ...

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  2. Which of the following explains the sequence of filling the electrons ...

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  3. Which one is the correct outer configuration of chromium.

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  4. Elements up to atomic number 103 have been synthesized and studied. If...

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  5. Which one is the electronic configuration of Fe^(+2)

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  6. The electronic configuration of gadolinium (atomic number 64) is:

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  7. Which one pair of atoms or ions will have same configuration ?

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  8. The configuration 1s^(2)2s^(2)2p^(5)3s^(1) shown

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  9. Number of unpaired electrons in 1s^(2),2s^(2)2p^(3) is

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  10. Which of the following is not correct for electron distribution in the...

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  11. What is the orbital angular momentum for an electron in d orbital ?

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  12. Which of the following has maximum energy ?

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  13. How many delectrons can fit in the orbital for which n = 3 and l = 1?

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  14. The orbital angular momentum of a p-electron is given as :

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  15. For the energy level is an atom which one of the following statement i...

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  16. The number of d-electrons in Fe^(2+)(Z=26) is not equal to the number...

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  17. Which of the following pairs of d-orbitals will hare electron density ...

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  18. The number of nodal planes '5d' orbital has, is

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  19. Which one is a wrong statement

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  20. 4d, 5p, 5f and 6p orbitals are arranged in the order of decreasing ene...

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