Assertion : F-F bond in `F_2` molecule is strong. Reason: F atom is small in size.

Assertion : F_2 has low reactivity. Reason: F-F bond has low bond dissociation enthalpy.

Explain why F-F bond in fluorine is weaker than Cl-Cl bond in chlorine ?

The questions given below consist of an assertion and the reason. Use the following key to choose the appropriate answer. (a) Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion. (b) The Assertion and the Reason are correct but the Reason is not the correct explanation of the Assertion.(c) Assertion is is CORRECT but reason is INCORRECT. (d) If assertion is INCORRECT but reason is CORRECT. (e)If both assertion and reason are INCORRECT. Assertion: In CaF_2, F^- ions occupy all the tetrahedral sites. Reason: The number of Ca^(2+) is double the number of F^- ions.

Assertion : Actinoids form relatively less stable complexes as compared to lanthanoids. Reason : Actinoids can utilise their 5f orbitals along with 6d orbitals in bonding but lanthanoids do not use their 4f orbital for bonding.

Bond dissociation energy of F_2 is less than Cl_2 .

Account for the following : Bond energy of F_2 is less than Cl_2 .

Give the molecular orbital diagram for F2 molecule.

Give reasons for the following: Bond enthalpy of F_2 is lower than that of Cl_2 .