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In which of the following pairs, the dif...

In which of the following pairs, the difference between the convalent radii of the two metals is maximum.

A

K, Ca

B

Mn, Fe

C

Co, Ni

D

Cr, Mn

Text Solution

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The correct Answer is:
A
Covalent radii decreases on going from left to right in periods. However among the transition elements the size do not changes much because the electrons add to the penultimate d-subshells i.e. (n-1)d - subshell.
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ERRORLESS -CLASSIFICATION OF ELEMENTS AND PERIODIC PROPERTIES -Ordinary Thinking Objective Questions Atomic and Ionic radii
  1. Which of the following is the biggest ion?

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  2. Which of the following set of elements has the strongest tendency to f...

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  3. In which of the following pairs, the difference between the convalent ...

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  4. The atomic radii in periodic table among elements from right to left

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  5. Of the following the ion with the smallest ionic radius is

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  6. The atomic radius of elements of which of the following series would b...

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  7. Which one of the following should be most stable

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  8. The trivalent ion having size in lanthanide series is

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  9. Chloride ion and potassium ion are isoelectronic. Then

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  10. The correct enegry value order is

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  11. The ionic conductance of the following cations in a given concentratio...

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  12. Which of the following has the largest size?

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  13. Difference between S and S^(2-) as S^(2-) has

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  14. Increase in atomic size down the group is due to

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  15. In the main group elements (i) as we proceed down the same group in t...

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  16. Point out the wrong statement On moving horizontally from left to r...

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  17. Which statement is correct

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  18. Assertion : Positive ions will be wider than parent atoms. Reason : ...

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  19. Assertion: The atomic radii of calcium is smaller than sodium Reason...

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  20. The correct order of atomic radii in group 13 elements is

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