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In the replacement reaction \( \text{Cl} + \text{MF} \rightarrow \text{CF} + \text{MI} \), the reaction will be most favourable if M happens to be:
- Na
- K
- Rb
- Li
Correct answer: Rb
Solution
The reaction involves halogen replacement, and the reactivity depends on the electropositivity of M. Rb is the most electropositive among the given options, making the reaction most favorable.
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