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The standard electrode potential of M + / M in aqueous solution does not depend on

Options

  1. AHydration of a gaseous metal ion
  2. BSublimation of a solid metal
  3. CIonisation of a solid metal atom
  4. DIonisation of a gaseous metal atom

Correct answer

C. Ionisation of a solid metal atom

Step-by-step solution

The stability of M + ions in aqueous medium depends on three factors: (i) Enthalpy of atomisation (ii) First ionisation enthalpies of isolated gaseous atom (iii) Hydration enthalpy. An element in M + state in aqueous medium is stabler if the electrode potential ( M + / M   ) value of more negative. Down the group, the tendency to form M + ion increases. In this process, ionisation of solid metal is not involved in this process.

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