$Cl_2$ gas can be dried by passing it over ....

Draw the molecular formula and structure of perbromic acid.

Hypo is used in photography for

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 $Br$).

Which of the following compounds is the strongest fluoride ion acceptor?

Identify the weakest acid among the following.