Complete the table below by indicating the colour and physical state at room temperature. Also, state one industrial use of chlorine and describe the disproportionation of chlorine in concentrated hyd

a)
Complete the table below by indicating the colour and physical state at room temperature.

Element	Colour	Physical State
Fluorine	Pale yellow	Gas
Bromine	Reddish-brown	Liquid

b)
One industrial use of chlorine is for the disinfection of water.

c) (iv)
When concentrated hydroxide is added to the reaction mixture, chlorine disproportionates to form chlorate and chloride ions, especially under hot and concentrated conditions.

Step 1: Write the unbalanced half-reactions.
Oxidation: $\text{Cl}_2 \longrightarrow ClO_3^