What happens when iodine reacts with sodium thiosulphate.

Explanation

### Step-by-Step Solution:

1. **Identify the Reactants**: The reactants in this reaction are iodine (I₂) and sodium thiosulphate (Na₂S₂O₃).

2. **Write the Chemical Equation**: The chemical reaction can be represented as:
\[ I_2 + Na_2S_2O_3 \rightarrow Na_2S_4O_6 + NaI \]
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