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One unpaired electron in an atom contributes a magnetic moment of 1.1 B.M. Calculate the magnetic moment of Cr

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Chromium `(3d^(5) 4s^(1))` has six unpaired electrons. Therefore, its magnetic moment is `1.1 B. M xx 6 = 6.6 B. M `
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KALYANI PUBLICATION-d- AND- f- BLOCK ELEMENTS-EXERCISE (PART-II) (DESCRIPTIVE QUESTIONS)(VERY SHORT ANSWER QUESTIONS)
  1. Which of the following is paramagnetic ? Sc^(3+) (Z=21),Cu^(+)(Z=29)

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

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

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  4. Why do transition elements show variable oxidation states?

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

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

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

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  8. What happens when KMnO4 is heated ?

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  9. What is Baeyer's reagent ?

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  10. Why is KMnO4 kept in dark bottles ?

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

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

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

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

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

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

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  17. Give the general electronic configuration of actinoids

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  18. The size of the trivalent cations in the lanthanoid series decreases s...

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  19. Out of the following identify (i) the *d' block element (ii) the of bl...

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  20. State a consequence of lanthanoid contraction shown by transition elem...

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