All of the carbonates of alkali metals do not decompose on heating EXCEPT:
Correct answer: A. Li2CO3
- A. Li2CO3
- B. Na2CO3
- C. K2CO3
- D. Rb2CO3
Explanation
All alkali metal carbonates are generally stable and do not decompose upon heating, except for lithium carbonate (Li₂CO₃). Upon heating, lithium carbonate decomposes to form lithium oxide (Li₂O) and carbon dioxide (CO₂). This is due to the unique properties of lithium compared to other alkali metals. The other options (Na₂CO₃, K₂CO₃, Rb₂CO₃) decompose on heating, forming their respective oxides and carbon dioxide.
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About s-Block and p-Block Elements
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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