Which one of the following characteristics of lithium does not resemble with other alkali metals?
Correct answer: A. It can form nitride when heated in air.
- A. It can form nitride when heated in air.
- B. It reacts with water to form hydroxide and hydrogen.
- C. It is soluble in liquid ammonia.
- D. Its nitrate is thermally unstable.
Explanation
Lithium stands out from other alkali metals as it is the only one capable of forming nitride when heated in air. This unique property distinguishes lithium from the general behavior of alkali metals.The other options, such as reacting with water to form hydroxide and hydrogen, being soluble in liquid ammonia, and having thermally unstable nitrate, are common characteristics shared by all alkali metals.
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The s and p blocks are studied through their valence-shell configurations, periodic trends and characteristic chemical properties. Work covers the reactions of Group I and Group II elements, the behaviour of Group IV elements, and how atomic size, ionization energy, electronegativity and metallic character change across periods and down groups.
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