What do atomic radius and ionic radius really mean to you?

Explanation

### Step-by-Step Text Solution

1. **Definition of Atomic Radius**:
- The atomic radius is defined as the distance from the center of the nucleus of an atom to the outermost shell of electrons surrounding that nucleus. It represents the size of an atom.

2. **Understanding Atomic Radius**:
- To visualize this, consider a hydrogen atom. If we have two hydrogen atoms (H₂), the atomic radius can be determined by measuring the distance from the nucleus of one hydrogen atom to the outermost electron shell. This distance is essentially half the distance between the two nuclei when they are in close proximity.

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