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The magnetic moment of a transition meta...

The magnetic moment of a transition metal ion is 3.87BM. The number of unpaired electrons present in it is

A

2

B

3

C

4

D

5

Text Solution

Verified by Experts

The correct Answer is:
B
`3.87=sqrt(n(n+2))`, where, n is the number of unpaired electrons.
solving n, we get,
`(3.87)^(2)=n(n+2)implies15=n^(2)+2n`
`n^(2)+2n-15=0`
`n=3`
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-D - AND F-BLOCK ELEMENTS-Practice exercise (Exercise 1)
  1. Mercury is a liquid metal because

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  2. The highest oxidation state exhibited by a transition metal is

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  3. The magnetic moment of a transition metal ion is 3.87BM. The number of...

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  4. The one which has incompletely filled d-orbitals in its ground state o...

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  5. (n-1)d^(10)ns^(2)is the electronic configuration of

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  6. When an electron from a lower energy d-orbital is excited to a higher ...

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  7. Select the correct order of sizes for the following d-block elements.

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  8. In an aqueous solution, Cu(+1) salts are unstable because

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  9. Which of the following pairs has the same size ?

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  10. Which of the following statements concerning transition elements is fa...

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  11. Which of the following is expected to be coloured?

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  12. Out of Cu^(2+),Ni^(2+),Co^(2+) and Mn^(2+) those dissolved in dil. HCL...

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  13. The stability of ferric ion is due to

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  14. The spin only magnetic moment of Fe^(2+) ion (in BM) is approximately

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  15. Which one of the following transition metal ions is diamagnetic?

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  16. Which of the following is not a characteristic of transition elements?

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  17. Which of the following pair of transition metal ions, have the same ca...

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  18. The metal which is considered as transition metal is

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  19. Consider the following statements is / are. (i)Sc has a low value o...

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  20. The magnetic nature of elements depends on the presence of unpaired el...

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