Atom as a whole is electrically neutral. Why?

Explanation

### Step-by-Step Solution:

1. **Understanding the Structure of an Atom**:
- An atom consists of a nucleus at its center, which contains protons and neutrons. Surrounding the nucleus are electrons that revolve around it.

2. **Identifying the Charges**:
- Protons carry a positive charge (+Q), while electrons carry a negative charge (-Q). Neutrons are neutral and do not contribute to the overall charge of the atom.

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