`RBCL + ICI` `2Rb + 2Cl_(2) + I_(2)` (from two molecules) `RbI + Cl_(2)` `2Rb[ICI] + Cl_(2)` (from two molecules).
SOLUTION :ALKALI metal halides combine with interhalogen compounds forming polyhalides. On heating the reverse reaction occurs. `Rb[ICl_(2)]OVERSET(Delta)rarrRbCl+ICl`