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Affinity for hydrogen decreases in the g...

Affinity for hydrogen decreases in the group from fluorine to iodine. Which of the halogen acids should have highest bond dissociation enthalpy?

A

HF

B

HCI

C

HBO

D

HI

Text Solution

Verified by Experts

The correct Answer is:
A
F due to its smallest size has the shortest H-F bond. Consequently, HF has the highest bond dissociation energy.
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ICSE-P-BLOCK ELEMENTS-EXERCISE (PART-I)(OBJECTIVE QUESTIONS)(THE CORRECT ALTERNATIVE FROM THE CHOICES GIVEN : )
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  2. Which of the following pairs of ions are isoelectronic and isostructur...

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  3. Affinity for hydrogen decreases in the group from fluorine to iodine. ...

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  4. Bond dissociation enthalpy of E-H (E = element) bonds is given below. ...

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  5. On heating with concentrated NaOH solution in an inert atmosphere of C...

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  6. Which of the following acids forms three series of salts?

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  7. Strong reducing behaviour of H(3)PO(2) is due to

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  8. On heating, lead nitrate forms oxides of nitrogen and lead. The oxides...

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  9. Which of the following elements does not show allotropy?

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  10. Which of the following statements is wrong?

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  11. Maximum covalency of nitrogen is

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  12. A brown ring is formed in the ring test for NO(3)^(-) ion. It is due t...

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  13. Elements of group - 15 compounds in +5 oxidation state. However, bismu...

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  14. On heating ammonium dichromate and barium azide separately we get

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  15. In the preparation of HNO(3), we get NO gas by catalytic oxidation of ...

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  16. The oxidation state of central atom in the anion of compound NaH(2)PO(...

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  17. Which of the following is not tetrahedral in shape?

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  18. Which of the following are peroxoacids of sulphur ?

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  19. Hot cone. H(2)SO(4) acts as moderately strong oxidising agent. It oxid...

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  20. A black compound of manganese reacts with a halogen acid to give green...

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