What is the main difference between protrons and neutrons?

Explanation:

A proton is a subatomic particle, symbol p or p⁺, with a positive electric charge. elementary charge and a mass slightly less than that of a neutron. Protons and neutrons, each with masses of approximately one atomic mass unit, are collectively referred to as "nucleon"

The neutron is a subatomic particle, symbol n, with no net electric charge and a mass slightly greater than that of a proton. Protons and neutrons constitute the nuclei of atoms. Since protons and neutrons behave similarly within the nucleus, and each has a mass of approximately one atomic mass unit, they are both referred to as nucleons. Their properties and interactions are described by nuclear physics.

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