An element A of group 1 shows similarity to an element B belonging to group 2. If \( A \) has ma...

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An element A of group 1 shows similarity to an element B belonging to group 2. If \( A \) has maximum hydration enthalpy in group I, then B is:
(a) \( \mathrm{Mg} \)
(b) \( \mathrm{Be} \)
(c) \( \mathrm{Ca} \)
(d) \( \mathrm{Sr} \)
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