In the given replacement reaction, the reaction will be most favourable if $M$ happens to be:

K

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R b

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L i

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N a

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Solution

The correct option is C $R b$
Reaction is faster with $R b$ because lattice of $R b F$ is less than $L i F, N a F, K F$ e energy

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Similar questions

M

(L i^{\oplus}, N a^{\oplus}, K^{\oplus}, R b^{\oplus})

(L i^{⨁}, N a^{⨁}, K^{⨁}, R b^{⨁})

The order of decreasing ionisation enthalpy in alkali metals is
(a) Na> Li > K> Rb (b) Rb< Na< K< Li
(c) Li > Na> K> Rb (d) K< Li < Na < Rb

N a, L i, R b,

K

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