Here's why:
* Electrons are the negatively charged particles orbiting the nucleus of an atom. They are relatively far from the nucleus and held in place by electrostatic attraction.
* Protons and neutrons, which reside in the nucleus, are tightly bound together by strong nuclear forces. These forces are much stronger than the electrostatic forces that hold electrons in place.
Therefore, when rubbing or pulling on an atom, you are more likely to dislodge or transfer electrons rather than protons or neutrons. This is the fundamental principle behind phenomena like static electricity and chemical bonding.