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Q.

An element A of group 1 shows similarity to an element B belonging to group 2. If A has maximum hydration enthalpy in group 1 then B is:

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a

Be

b

Mg

c

Ca

d

Sr

answer is A.

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Detailed Solution

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Diagonal relationship

Li+  Maximum hydration enthalpy in group 1 due to small size.

So ‘B’ is Mg.

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