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(A): The bond dissociation energy of flu...

(A): The bond dissociation energy of fluorine is less than bromine.
(R): In fluorine molecule, large lone pair electronic repulsions and appreciable internuclear repulsions are present.

A

Both A & R are true, R is the correct explanation of A

B

Both A & R are true, R is not correct explanation of A

C

A is true, R is false

D

A is false, R is true

Text Solution

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The correct Answer is:
A
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AAKASH SERIES-VIIA GROUP ELEMENTS -OBJECTIVE EXERCISE - 1 (ASSERTION AND REASON TYPE)
  1. (A): The bond dissociation energy of fluorine is less than bromine. ...

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  2. (A): Reaction given below is possible 2KCI + Br2 to Cl(2) + 2KBr (...

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  3. (A): Electron affinity of fluorine is lower than that of chlorine (R...

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  4. (A): Cl - O bond length decreases from CIO^(-) to ClO(4)^(-) (R): CI...

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  5. (A): Bromine does not displace chlorine from its salt solution (R): ...

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  6. (A) : lodine is the only halogen that is naturally available in positi...

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  7. (A) : Chlorine acts as a bleaching agent in the presence of moisture ...

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  8. (A): HBr is stronger acid than HI. (R) : Bromine is more electronega...

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  9. (A): Iodine displaces bromine from KBrO3 (R): Iodine is strong oxidi...

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  10. (A) OX^(-) on heating in the presence of OH^(-) gives X^(-)andXO(3)^(-...

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  11. (A) : Chlorine is gas, bromine is liquid and iodine is solid (R) : I...

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  12. (A): Hydrogen iodide is most stable among hydrogen halides (R): Iodi...

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  13. (A): Oxidation ability increases from HOCI to HCIO4 (R): Oxidation n...

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  14. (A): Fluorine does not form oxyacids (R): Electronegativity of fluor...

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  15. (A): lodine appears in violet colour. (R): Iodine absorbsviolet part...

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  16. (A) :Among hydrogen halides, hydrogen fluoride is least volatile. (R...

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