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Bond dissociation energy of F(2) is less...

Bond dissociation energy of `F_(2)` is less that of `Cl_(2)` give reason.

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Due to smaller size, the lone pairs of electrons of the F-atoms repel the bond pair of the F-F bond.In contrast, because of comparatively larger size of Cl atoms, the lone pairs on the Cl atoms do not repel the bond pair of Cl-Cl bond.As a result, F-F bond energy is lower than that of Cl-Cl bond energy.
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Account for the following : (i) NH_(3) is a stronger base than PH_(3) (ii) Sulphur has a greater tendency for catenation than oxygen. (iii) Bond dissociation energy of F_(2) is less than that of Cl_(2) .

Assertion: Bond dissociation energy of F_(2) molecule is less than that of Cl_(2) molecule. Reason: Due to inter-electronic repulsion between F atom, F-F bond length in F_(2) molecule is higher than Cl-Cl bond lengthh in Cl_(2) molecule.

The bond dissociation energy of N_(2)^(+) is less than that of N_(2) . Show why this is the case.

Statement-1 : Bond dissociation energy of F_(2) is more than Cl_(2) . Statement-2 : Due to smaller size of fluorine there are greater electron repulsions between the F atoms than Cl atoms.

Define bond dissociation energy.

Assertion :- Bond Dissociation energy is F_(2) gt Cl_(2) Reason:- Cl_(2) have more electronic repulsion than F_(2) .

(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.

The bond dissociation energy of B-F in BF_(3) is 646 kJ mol^(-1) whereas that of C-F in CF_(4) is 515 kJ mol^(-1) . The correct reason for higher B-F bond dissociation energy as compared to that of C-F in CF_(4) is

Bond dissociation on energy of Cl_(2) is 240 kJ/mol. The longest wavelength of photon that can break this bond would be [N_(A)=6xx10^(23), h=6.6xx10^(-34)J/s]

Assertion :- Bond energy of F_2 is less than Cl_2 . Reason :- Bond length of F_2 is smaller than Cl_2 .

RESONANCE ENGLISH-P BLOCK ELEMENTS-Exercise 3 part-3
  1. Complete the following reactions equations : (i)CaO CI(2)+HCl to (...

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  2. Noble gases are inert to chemical reactivity. This is due to

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  3. Bond dissociation energy of F(2) is less that of Cl(2) give reason.

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  4. What happen when Cl(2) is passed through a hot concentrated solution o...

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  5. How would you account for the following ? (i)The lower oxidation sta...

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  6. Write chemical equations for the following processes : (i) Chlorin...

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  7. Explain why the electrons gain enthalpy of fluorine is less negative t...

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  8. Draw the structures of the following molecules : (i) XeF(4) (ii) B...

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  9. F(2) is a stronger oxidising agent than Cl(2)

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  10. The majority of noble gas compounds are those of xenon. Explain.

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  11. No chemical compound of helium is known.

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  12. XeF(2) has linear structure and not a bent structure , Given reason .

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  13. Why fluorine never acts as the central atom in polyatomic interhalogen...

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  14. (a) (i) Complete the following chemical equations : (i)NaOH((aq))+...

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  15. Why fluorine does not exhibit any positive oxidation state?

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  16. Explain the following : (a) The electron gain enthalpy with negative...

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  17. Draw the structure of XeF(2)

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  18. (a) Account for the following : (i) The acidic strength decreases i...

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  19. (a) what happens when (i) Chlorine gas is passed though a hot conc...

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  20. Explain the following giving an appropriate reason in each case. (i)...

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