The size of a cation is smaller that than of its parent atom .Give reasons.

Explanation

### Step-by-Step Text Solution:

1. **Understanding Cations and Parent Atoms**:
- A cation is formed when an atom loses one or more electrons. The parent atom is the neutral atom before it loses electrons.

2. **Electron Count**:
- When an atom loses electrons to form a cation, the total number of electrons decreases. For example, when sodium (Na) loses one electron, it becomes Na⁺.

...