Question

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 $Be ^{2+}$ but relatively large value of atomization enthalpy
In the light of the above statements, choose the most appropriate answer from the options given below

• A. Both $A$ and $R$ are correct and $R$ is the correct explanation of $A$
• B. $A$ is not correct but $R$ is correct
• C. Both $A$ and $R$ are correct but $R$ is NOT the correct explanation of $A$
• D. $A$ is correct but $R$ is not correct

Answer 1

Answer: (A)

$Be$ has less negative value compared to other AEM. However it's reducing nature is due to large hydration energy associated with the small size of $Be ^{2+}$ ion and relatively large value of the atomization enthalpy of metal.