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Hydrides of Nitrogen

The property ...

Question

The property which is not true about fluorine is :

A

most of its reactions are exothermic

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B

it forms only one oxo acid

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C

highest electronegativity

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D

high

F - F

bond dissociation enthalpy

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Solution

The correct option is D high $F - F$ bond dissociation enthalpy
The bond dissociation energy of $F - F$ bond is 159 kJ/mol which is not high bond dissociation energy and it is because of the high electronegativity of $F -$ atom.

The correct answer is option D.

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Similar questions

Explain why fluorine forms only, one oxo-acid, HOF?

Q. Read the assertion and reason carefully to mark the correct option out of the options given below:
(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.
(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.
(c) If assertion is true but reason is false.
(d) If assertion is false but reason is true.
Assertion: Fluorine is stronger oxidizing agent than chlorine
Reason: High F-F bond dissociation enthalpy and low hydration enthalpy of F^-.

Q. Assertion: The fluorine has lower reactivity.
Reason :

F - F

bond has low bond dissociation energy.

Q. Consider the following statements.

S_{1}

: Fluorine does not form any polyhalide as it has low F - F bond energy

S_{2}

: The chlorine has the most negative electron gain enthalpy.

S_{3}

: The first ionization potential of N and 0 atoms are 14.6 and 13.6 eV respectively.

Which of the above statements are correct?

F_{2}

has high reactivity. Reason:

F - F

bond has low bond dissociation enthalpy.

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