Why atomic number is more fundamental than any other quantity ?

Explanation

### Step-by-Step Solution:

1. **Understanding Fundamental Quantities**:
- The fundamental quantities in chemistry include atomic mass, atomic number, and chemical properties of elements.
- Atomic number is defined as the number of protons present in the nucleus of an atom.

2. **Role of Atomic Number**:
- The atomic number determines the electronic configuration of an atom, which is crucial for understanding how an element will react chemically.
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