The equation represents the reaction of a halogen with the aqueous ions of a different halogen. $X_2 + 2Y^- \rightarrow 2X^- + Y_2$ What is $X_2$ and what is the colour of $Y^-$?
- Achlorine, brown
- Bchlorine, colourless
- Ciodine, brown
- Diodine, colourless