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Question: Answered & Verified by Expert
Why does lithium, despite having the most negative Eo value among the alkali metals, react less vigorously with water compared to sodium?
Chemistrys Block ElementsNEET
Options:
  • A Lithium has a larger size and lower hydration energy.
  • B Lithium has a smaller size and lower hydration energy.
  • C Sodium has a larger size and higher hydration energy.
  • D Sodium has a smaller size and higher hydration energy.
Solution:
1357 Upvotes Verified Answer
The correct answer is: Lithium has a smaller size and lower hydration energy.
The less vigorous reaction of lithium with water, despite having a more negative Eo value, is attributed to its small size and very high hydration energy, which makes it less reactive than sodium.

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