Explain the formation of a cation. Give its main characteristics.

Explanation

### Step-by-Step Solution:

1. **Definition of Cation**:
A cation is a positively charged ion that is formed when an atom loses one or more electrons.

2. **Formation of a Cation**:
Let's consider an element A. When this element loses an electron, it has fewer electrons than protons. For example, if element A has 11 protons and 11 electrons (which makes it neutral), losing one electron will result in 11 protons and 10 electrons. This imbalance creates a positive charge. The charge of the cation can be represented as +1.

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