The correct decreasing order of boiling point of hydrogen halides is

In the halogen group,fluorine has the highest electronegativity according to the Pauling scale,yet its electron gain enthalpy is less negative than that of chlorine. This is because ....

In the following reaction, products $x$ and $y$ respectively, are
$P_4 + 10 SO_2Cl_2 \longrightarrow x + y$

Which of the following statements regarding the properties of halogens are correct?
$(a)$ Due to small size and strong inter-electronic repulsion,the electron gain enthalpy of fluorine is less negative than that of chlorine.
$(b)$ Iodine has a different physical state and colour compared to other members of the group.
$(c)$ Fluorine does not show a positive oxidation state.
$(d)$ In $X_{2(g)} + H_2O(l) \rightarrow HX(aq) + HOX(aq)$ (where $X = Cl$ or $Br$).

$F_2$ is formed by reacting $K_2MnF_6$ with:

In the following reaction,identify the nature of the product formed by the complete hydrolysis of the underlined atom at $R.T.$:
$\underline{Cl}F_5 + H_2O \longrightarrow HClO_3 + HF$