Here's why:

* Basic Structure: Electrons are fundamental particles, meaning they are not made up of smaller parts. They are one of the building blocks of atoms.

* Charge Definition: Electric charge is a fundamental property of matter that describes how it interacts with electromagnetic fields. There are two types of charge: positive and negative.

* Opposite Charges Attract: Opposite charges attract, while like charges repel. This is why electrons are attracted to protons, which have a positive charge, and are repelled by other electrons.

It's important to remember that electrons cannot have both positive and negative charges simultaneously. They possess a fixed negative charge.