The elements of which groups prefer to form cations?

Explanation

To determine which groups of elements prefer to form cations, we need to analyze the periodic table and the characteristics of the elements in different groups.

### Step-by-Step Solution:

1. **Understanding Cations**:
- Cations are positively charged ions formed when an atom loses one or more electrons. The loss of electrons results in a net positive charge.

2. **Identifying Groups in the Periodic Table**:
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