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Following Hund's rule which element cont...

Following Hund's rule which element contains six unpaired electron

A

Fe

B

Co

C

Ni

D

Cr

Text Solution

Verified by Experts

The correct Answer is:
D
Electronic configuration of the `Cr_24` is `[Ar]4s^1 3d^5` or
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ERRORLESS -ATOMIC STRUCTURE-Quantum numbers , Electronic configuration and Shape of orbitals
  1. The explanation for the presence of three unpaired electrons in the ni...

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  2. Electron enters the sub-shell for which (n+l) value is minimum. This i...

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  3. Following Hund's rule which element contains six unpaired electron

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  4. Which of the following sets of quantum numbers is correct for an elect...

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  5. Consider the ground state Cr atom (Z = 24). The number of electron w...

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  6. In a malti-electrons atom which of the following orbitals deseribed...

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  7. Which of the following sets of quantum numbers represents the highest ...

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  8. The electrons identified by quantum numbers n and l

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  9. Which of the following configuration is correct for iron

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  10. The number of orbitals in d sub-shell is

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  11. The number of valence electrons in carbon atom is

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  12. Pauli's exclusion principle states that

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  13. For d subshell , the azimuthal quantum number is

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  14. The number of unpaired electrons in carbon atom is -

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  15. A completely filled d-orbital (d^10) is

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  16. The two electrons in K sub-shell will differ in

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  17. Which of the following represents the correct sets of the four quantum...

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  18. Which of the following statements is not correct for an electron that ...

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  19. The number of d electrons in Fe^(2+) (atomic number of Fe = 26) is not...

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  20. Which set of quantum numbers for an electron of an atom is not possibl...

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