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Zn and Hg do not show variable valency l...

`Zn` and `Hg` do not show variable valency like `d-`block elements because-

A

They are soft

B

Their d-shells are complete

C

They have only two electrons in the outermost shell

D

Their-shell are incomplete

Text Solution

Verified by Experts

The correct Answer is:
B
Both have `d^(10)` configuration. So only oxidation state +2.
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NARAYNA-D - BLOCK ELEMENTS-EXERCISE-1 (INTRODUCTION)
  1. Which of the following transition metal ions is colourless ?

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  2. Which of the following shows an oxidation state of +8?

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  3. Zn and Hg do not show variable valency like d-block elements because-

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  4. Highest oxidation state of Manganese and Osmium is shown with

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  5. Which of the following compound is not coloured ?

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  6. A solution containing Fe^(3+) is titrated against a standard solution ...

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  7. Which of the following compounds are coloured due to charge transfer s...

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  8. Which of the following pairs are not both coloured in aqueous solution...

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  9. N(2)(g)+3H(2)(g)overset(Fe+Mo)hArr2NH(3)(g), Haber's process, Mo is us...

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  10. Which one of the following shows highest magnetic moments?

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  11. Which of the following ion has the maximum magnetic moment?

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  12. The value of the 'spin only magnetic moment for one of the following c...

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  13. The "spin-only" magnetic moment [in units of Bohr magneton, (muB)] or...

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  14. In a transition series, as the atomic number increases, paramagnetism

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  15. The magnetic moment of a transition metal ion is 3.87BM. The number of...

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  16. Permanent magnets are generally made of alloys of

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  17. Which of the following group of transition metals is called coinage me...

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  18. The product obtained on treating KMnO(4) with very strong alkali in ab...

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  19. The oxidation of manganate ion to permanganate ion can be done by

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  20. When SO(2) is passed through acidified K(2)Cr(2)O(7) solution

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