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Which of the following is paramagnetic ?...

Which of the following is paramagnetic ?
`Sc^(3+) (Z=21),Cu^(+)(Z=29)`

Text Solution

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None of them is paramagnetic because of the absence of unpaired electrons.
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ICSE-d- AND- f- BLOCK ELEMENTS-EXERCISE (PART-II) (DESCRIPTIVE QUESTIONS)(VERY SHORT ANSWER QUESTIONS)
  1. How is the magnetic moment of a species related to the number of unpai...

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  2. The electronic configuration of Co^(2+) and Cu^(2+) is d^7 and d^(9) r...

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  3. Which of the following is paramagnetic ? Sc^(3+) (Z=21),Cu^(+)(Z=29)

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  4. Why is Ti^(2+) ion paramagnetic ?

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  5. One unpaired electron in an atom contributes a magnetic moment of 1.1 ...

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  6. Why do transition elements shows variable oxidation states?

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  7. Why are complex ions readily formed when water molecules react with th...

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  8. Arrange the following in increasing order of basic character: MnO, ...

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  9. Arrange the following in increasing order of acidic character: CrO,...

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  10. What happens when KMnO4 is heated ?

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  11. What is Baeyer's reagent ?

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  12. Why is KMnO4 kept in dark bottles ?

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  13. Why is HCl not used to acidify a permanganate solution in volumetric e...

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  14. Why is K(2)Cr(2)O7 generally preferred over Na(2)Cr(2)O(7) , in volume...

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  15. What happens when chromates are kept in acidic solution and dichromate...

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  16. In permanganate ion, all the bonds formed between Mn and oxygen are co...

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  17. Why lanthanoids and actinoids are called f-block elements?

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  18. What is the maximum oxidation state in actinoids?

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  19. State the common characteristic of lanthanoids and actanoids which pla...

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  20. Give the general electronic configuration of actinoids

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