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Which of the following lanthanoid ions i...

Which of the following lanthanoid ions is diamagnetic - (At. Nos. Ce = 58, Sm = 62, Eu = 63, Yb = 70) -

A

`Yb^(2+)`

B

`Ce^(2+)`

C

`Sm^(2+)`

D

`Eu^(2+)`

Text Solution

Verified by Experts

The correct Answer is:
A
`Yb:[Xe]4f^(14)6s^(2+), Yb^(2+):[Xe]4f^(14)6s^(0)`
Because of the formation of stable electronic configuration, Yb forms + 2 oxidation state.
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CHHAYA PUBLICATION-D - AND F - BLOCK ELEMENTS -ENTRANCE QUESTION BANK
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  3. Which of the following lanthanoid ions is diamagnetic - (At. Nos. Ce =...

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  4. Reason of lanthanoid contraction is -

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  5. Magnetic moment 2.83 BM is given by which of the following ions - (AT....

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  6. In acidic medium, H(2)O(2) changes Cr(2)O(7)^(2-) to CrO(5) which has ...

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  7. Gadolinium belong to 4f - series. Its atomic number is 64. Which of th...

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  8. Which one of the following statements related to lanthanoids is incorr...

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  9. The electronic configuration of Eu (Atomic No. 63), Gd (Atomic No. 64)...

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  10. Which of the following statements is correct when SO(2) is passed thro...

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  11. The reason for greater range of oxidation states in actinoids is attri...

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  12. Which one of the following ions exhibits d - d transition and paramagn...

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  13. Match the metal ions given in column - I with the spin magnetic moment...

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  14. MnO(3) in an acidic medium dissociates into -

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  15. Which is not stable under ambient condition -

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  16. Magnetic moment of Cr^(2+) is nearest to -

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  17. Which of the following does not exist -

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  18. Which of the following is most basic -

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  19. When calomel is treated with ammonium hydroxide, a black substance is ...

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  20. Maximum number of unpaired electrons are present in -

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