Atomic and Physical Properties of Group 17 Elements

The highest bond enthalpy is shown by halogen

Which of the following halogen atom has the highest melting and boiling points?

The pale yellow coloured halogen is

What are the correct orders of bond lengths ${\mathrm{d}}_{\mathrm{X}-\mathrm{X}}$ and bond dissociation enthalpies ${\mathrm{BDE}}_{\mathrm{X}-\mathrm{X}}$ for ${\mathrm{F}}_2$ and ${\mathrm{Cl}}_2$? (where $\mathrm{X}=\mathrm{F}$ or $\mathrm{Cl}$ )

Which amongst the following halogen has the highest hydration enthalpy?

_____ has the lowest value of ionisation energy among the halogens.

The ionisation enthalpy of _____ is highest among the halogens.

Iodine vapours are violet in colour because the molecules of iodine:

Among hydrogen halides, which of the following has maximum dipole moment?

Which among the following lithium halides is more covalent in nature?

In the formation of a chloride ion, from an isolated gaseous chlorine atom, $3.8 \mathrm{eV}$ energy is released, which would be equal to :

Which is correct

Volatile nature of halogen is because :

Fluorine does not show positive oxidation state due to absence of:

The halogen with highest negative electron gain enthalpy is ? 

Bond energy of halogens follows the order-

Which is correct for increasing order of electron affinity of ${17}^{\mathrm{th}}$ group elements? 

What would be the reason that electron affinity of chlorine is higher than fluroine? 

${\mathrm{HF}}_2^{-}$  exists in solid state in liquid $\mathrm{HF}$ but not in aqueous solution because :

Iodine is a solid and sublimes at ordinary temperature. This is because of: