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Question

Which of the following does not show the anomalous behaviour of Lithium?

A
Lithium reacts with nitrogen to form a nitride
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B
Lithium carbonate decomposes on heating
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C
Lithium nitrate gives NO2 on heating
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D
Lithium is the strongest reducing agent
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Solution

The correct option is D Lithium is the strongest reducing agent
Anomalous behavior of lithium is due to extremely small size of lithium. Its cation on account of small size and high nuclear charge, lithium exerts the greatest polarizing effect out of all alkali metals on the negative ion. Consequently, lithium ion possesses a remarkable tendency towards solvation and develops a covalent character in its compounds.

But lithium like other metals of the same group is a strong reducing agent. In fact, Lithium is the strongest reducing agent in aqueous solution.

Thus option D is correct.

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