The correct order of hydration enthalpies is

(A) K$$^+$$

(B) Rb$$^+$$

(C) Mg$$^{2+}$$

(D) Cs$$^+$$

(E) Ca$$^{2+}$$

Choose the correct answer from the options given below :

Correct statement about smog is :

Identify the correct order for the given property for following compounds.

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The bond dissociation energy is highest for