Lithium exhibits anomalous properties when compared to the other alkali metals. Which of the followi — s Block Elements Chemistry Question
Question
Lithium exhibits anomalous properties when compared to the other alkali metals. Which of the following accurately describes the products formed when Lithium nitrate ($LiNO_3$) is strongly heated?
Answer: B
💡 Solution & Explanation
While other alkali metal nitrates decompose on heating to yield the corresponding metal nitrite and oxygen ($2NaNO_3 \rightarrow 2NaNO_2 + O_2$), Lithium nitrate anomalously decomposes to give lithium oxide, nitrogen dioxide, and oxygen ($4LiNO_3 \rightarrow 2Li_2O + 4NO_2 + O_2$) due to the high polarizing power of the $Li^+$ ion.
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