Why does caesium carbonate not decompose yet lithium carbonate does?

Explanation

To understand why caesium carbonate (Cs2CO3) does not decompose while lithium carbonate (Li2CO3) does, we need to analyze the properties of these compounds, particularly focusing on their lattice energy and stability.

### Step-by-Step Solution:

1. **Understanding Carbonates**:
- Both lithium carbonate (Li2CO3) and caesium carbonate (Cs2CO3) are ionic compounds consisting of metal cations (Li+ and Cs+) and the carbonate anion (CO3^2-).

2. **Lattice Energy Concept**:
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