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Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : Beryllium has less negative value of reduction potential compared to the other alkaline earth metals. Reason R : Beryllium has large hydration energy due to small size of Be2+ but relatively large value of atomization enthalpy. In the light of the above statements, choose the most appropriate answer from the options given below.

1. Both A and R are correct but R is NOT the correct explanation of A
2. A is correct but R is not correct
3. Both A and R are correct and R is the correct explanation of A
4. A is not correct but R is correct

Correct answer: Both A and R are correct and R is the correct explanation of A

Solution

Beryllium's less negative reduction potential is due to its high hydration energy, which arises from its small ionic size, and the large atomization enthalpy indicates that it requires more energy to break its bonds, making it less favorable for reduction compared to other alkaline earth metals.

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