An element X which is a yellow solid at room temperature shows catenation and allotropy. X forms two oxides which are also formed during the thermal decomposition of ferrous sulphate crystals and are the major air pollutants.
Write the balanced chemical equation for the thermal decomposition of ferrous sulphate crystals?

Explanation

To write the balanced chemical equation for the thermal decomposition of ferrous sulphate crystals (FeSO4), we need to follow these steps:

### Step-by-Step Solution:

1. **Identify the Reactant**: The reactant in this case is ferrous sulphate, which has the chemical formula FeSO4.

2. **Understand Thermal Decomposition**: Thermal decomposition is a reaction where a single compound breaks down into two or more products when heated. In this case, FeSO4 decomposes upon heating.

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