Which of the following alkali metal nitrates decomposes on strong heating to yield nitrogen dioxide (), oxygen (), and the metal oxide (), rather than the metal nitrite ()?

Question

Which of the following alkali metal nitrates decomposes on strong heating to yield nitrogen dioxide ($NO_2$), oxygen ($O_2$), and the metal oxide ($M_2O$), rather than the metal nitrite ($MNO_2$)?

Prashant Kotian · Accepted Answer

Correct answer: C. Due to its small size and high polarizing power (similar to ), Lithium follows a diagonal relationship pattern. Its nitrate decomposes completely into lithium oxide, nitrogen dioxide, and oxygen (). Nitrates of Na, K, Rb, and Cs yield metal nitrites and oxygen upon heating.

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