If the total number of neutrons and protons in a nuclear reaction is conserved how then is the energy absorbed or evolved in the reaction ?

Explanation

To understand how energy is absorbed or evolved in a nuclear reaction while the total number of neutrons and protons is conserved, let's break it down step by step.

### Step-by-Step Solution:

1. **Understanding Conservation of Nucleons**:
In a nuclear reaction, the total number of nucleons (neutrons and protons) is conserved. This means that the sum of neutrons and protons in the reactants is equal to the sum of neutrons and protons in the products.

2. **Example of a Nuclear Reaction**:
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