4. Chemical bonding and molecular structure — Chemistry STD 11 Science — Question

Assertion $(A) :$ A simple distillation can be used to separate a mixture of propanol and propanone.

Reason $(R) :$ Two liquids with a difference of more than $20^{\circ} \mathrm{C}$ in their boiling points can be separated by simple distillations.

In the light of the above statements, choose the most appropriate answer from the options given below:

$(I)$ Low enthalpy of dissociation of $F-F$ bond

$(II)$ High hydration enthalpy of $F^-$

$(III)$ Low atomisation enthalpy of $F_2$

[Atomic mass : Silver $=108$, Bromine $=80]$