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In context of the lanthanoids, which of ...

In context of the lanthanoids, which of the following statement is not correct ?

A

There is a gradual decrease in the radii of the members with increasing atomic number in the series.

B

All the members exhibit +3 oxidation state.

C

Because of Similar Properties the Separation of lanthanoids is not easy.

D

Availability of 4f electrons results in the formation of compounds in +4 State for all the members of the series.

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MODERN PUBLICATION-d-AND f- BLOCK ELEMENTS-EXERCISE
  1. What is the coordinate number of the central metal ions in the followi...

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  2. Draw lewis dot structure of SiCl4

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  3. In context of the lanthanoids, which of the following statement is not...

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  4. Iron exhibits +2 ang +3 oxidation States. Which of the following State...

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  5. Four successive members of the first row transition elements are liste...

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  6. Which of the following arrangement does not represent the correct orde...

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  7. Which series of rections correctly represents chemical reactions relat...

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  8. The colour of KMnO4 is due to

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  9. Draw lewis dot structure of SO3

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  10. Mark the correct statement(s). (1) Manganese exhibits +7 oxidation sta...

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  11. What is the maximum oxidation state shown by actinoids?

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  12. KMnO4 gets reduced to

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  13. All Cu (II) halides are known except the iodide. The reason for is tha...

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  14. The transition metal ion that has ‘spin-only’' magnetic moment value...

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  15. Write a short note on chromyl chloride test.

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  16. The bonds present in the structure of dichromate ion are

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  17. Write lewis dot symbol for following elements : carbon

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  18. When H2O2 is shaken with an acidified solution of K2Cr2O7 in presence ...

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  19. Draw lewis dot structure of C2H4

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  20. How would you account for the increasing oxidising power in the series...

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