A certain nucleus X has a mass number 14 and atomic number 6. The nucleus X changes to `""_(7)Y^(14)` after the loss of a particle.
Name the particle emitted.

Explanation

To solve the problem, we need to analyze the given information about the nucleus X and the resulting nucleus Y after the emission of a particle.

### Step-by-Step Solution:

1. **Identify the Given Information**:
- Nucleus X has a mass number (A) of 14 and an atomic number (Z) of 6.
- This can be represented as:
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...