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For the four successive transition eleme...

For the four successive transition elements (Cr, Mn, Fe, and Co), the stability of `+2` oxidation state will be there in which of the following order ?
`(At. Nos. Cr = 24, Mn = 25, Fe = 26, Co = 27)`

A

`Cr gt Mn gt Co gt Fe`

B

`Mn gt Fe gt Cr gt Co`

C

`Fe gt Mn gt Co gt Cr`

D

`Co gt Mn gt Fe gt Cr`

Text Solution

Verified by Experts

The correct Answer is:
B
On the basis of electrode potentials, the correct order is `Mn gt Fe gt Cr gt Co`
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NARAYNA-D - BLOCK ELEMENTS-EXERCISE-3
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  3. Which of the following compounds is coloured?

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  5. For which of the following pairs, magnetic moment is same ?

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  10. Which of the following transition metal ion is not coloured?

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  11. Which of the following ions will exhibit colour in aqueous solution ?

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

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  14. For the four successive transition elements (Cr, Mn, Fe, and Co), the ...

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  15. Which of the statements is not trure?

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  17. Magnetic moment 2.83 BM is shown by which of the following ions?

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  18. Magnetic moments 2.84 B.M is given by : (At. nos. ni = 28, Ti = 22, ...

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

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