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Which one of the following exists in the...

Which one of the following exists in the oxidation state other than `+3`?

A

B

B

Al

C

Ce

D

Ga

Text Solution

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The correct Answer is:
C
Boron (B), aluminium (Al) and galium, (Ga) are present in IIIA group. They show+3 oxidation state. While cerium (Ce) is a lanthanoid. It shows +3 and +4 oxidation state.
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-D - AND F-BLOCK ELEMENTS-Practice exercise (Exercise 1)
  1. An explosion takes place when conc. H2SO4 is added to KMnO4. Which of ...

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  2. The outer electronic configuration of Gd (At.No. 64) is

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  3. Identify the incorrect statement among the following.

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  4. The atomic size of cerium and promethium is quite close, because

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  5. The lanthanide contraction relates to

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  6. Because of lanthnoid contraction, which of the following pairs of elem...

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  7. Ln^(3+) (trivalent lanthanides ions ) have electronic configuration.

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  8. The basicity of lanthanoid hydroxides, across the lanthanoid series

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  9. There are 14 elements in actinoid series. Which of the following eleme...

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  10. lanthanoid contraction, the unique in the chemistry of lanthanoids, is...

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  11. Misch metal is

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  12. Consider the following statements, (I) La(OH)(3) is the least basi...

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  13. Which one of the following exists in the oxidation state other than +3...

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  14. The radius of La^(+) (at no 57) is 1.06Å. What may be the radius of Lu...

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  15. Lanthanoid contraction is caused due to:

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  16. Match the Column and choose the correct option from codes given below.

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  17. Which of the following ion acts as an oxidising agent?

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  18. Which of the following has got incompletely filled f-subshell?

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  19. The first ionsation enthalpies of the lanthanoids are around…A….,the s...

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  20. Knowing that the Chemistry of lanthanoids (Ln) is dominated by its+3 o...

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