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Which of the following has the lowest en...

Which of the following has the lowest enthalpy of atomisation ?

A

V

B

Ti

C

Ni

D

Zn

Text Solution

Verified by Experts

The correct Answer is:
D
In general d-block elements exoibit higher enthalpies of atomisation on account of stronger boinding between atoms which arises due to participation of unpaired (n-1) d electrons in covalent bonding besides the participation of ns electrons in metallic bonding. In the 3d-series Sc (Z = 21) to Zn (Z = 30), the enthalpy of atomisation of zinic is the lowest, i.e., 126 kJ `mol^(-1)` because Zn has no unpaired (n-1) d electron available for additional convalent bonding.
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R SHARMA-THE D AND F BLOCK ELEMENTS-Follow-up Test 2
  1. Unlike s-block metals, have very high melting and boiling points they

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  2. Which of the following has the highest melting point in the first row ...

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  3. Which of the following has the lowest enthalpy of atomisation ?

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  4. Which of the following d-block metals has the highest boiling point ?

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  5. Which of the folling d-block metals has the highest density ?

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  6. Atoms of d-block elements in a given period are smaller than those of ...

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  7. Which of the following statement is correct ?

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  8. Which of the following d-block elements has the bigger covalent radius...

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  9. Which of the following statement is correct regarding 3d-series of ele...

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  10. Which of the d-block elements has the lowest electronegativity ?

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  11. The noble charactoer of platinum and gold is favoured by

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  12. Which of the following is correct for d-block metals ?

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  13. The d-block elements exhibit variable oxidation states. The serveral d...

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  14. Which of the following transition elements does not exhibit variable o...

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  15. Which of the 3d-seres of the transition metals exhibits the leagest nu...

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  16. Which of the following has d^(1) configuration and is stable ?

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  17. Which of the following has d^(3) configuration and is quite stable ?

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  18. Which of the following species with d^(6) configuration is stable in ...

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  19. Which of the following is the strongest oxidizing agent ?

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  20. Which of the following couples has the most positive E^(Theta) value ?

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