Which of the following is unstable?
Correct answer: A. Li₂CO₃
- A. Li₂CO₃
- B. MgCO₃
- C. Both a and b
- D. Both are stable
Explanation
Li₂CO₃ is unstable and decomposes on heating to form Li₂O and CO₂. This is because lithium is a small, highly electropositive element, and its carbonate is less stable than the carbonates of other alkali metals.
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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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