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Question: Answered & Verified by Expert
In certain matters lithium differs from other alkali metals, the main reason for this is
Chemistrys Block ElementsJEE Main
Options:
  • A Small size of $L i$ atom and $L i^{+}$ion
  • B Extremely high electropositivity of $L i$
  • C Greater hardness of $L i$
  • D Hydration of $\mathrm{Li}^{+}$ion
Solution:
1411 Upvotes Verified Answer
The correct answer is: Small size of $L i$ atom and $L i^{+}$ion
Small atomic and ionic size leads to high electronegativity and hydration energy. Small atomic and ionic size leads to high electronegativity and hydration energy.

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