Why we should not use freons as coolants in refrigerating equipments ?

Explanation

### Step-by-Step Solution:

1. **Understanding Freons**: Freons are a type of chlorofluorocarbon (CFC), which are compounds made up of chlorine, fluorine, and carbon. They were commonly used as coolants in refrigeration and air conditioning systems.

2. **Environmental Impact**: One of the primary reasons we should not use freons is their long atmospheric lifetime. Once released into the atmosphere, they can persist for many years, leading to significant environmental consequences.

3. **Ozone Layer Depletion**: Freons, when they reach the stratosphere, are broken down by ultraviolet (UV) radiation. This breakdown releases chlorine radicals, which are highly reactive.

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