In the replacement reaction The reaction will be most favourable if $M$ happens to be

In the replacement reaction The reaction will be most favourable if $M$ happens to be
  1. $\mathrm{Na}$
  2. $\mathrm{K}$
  3. $\mathrm{Rb}$
  4. $\mathrm{Li}$

Solution

For the reaction, The reaction will be faster with $\mathrm{Rb}$ because lattice energy of RbF is less than LiF, NaF, KF.

Asked in: NEET 2012 (Mains)

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