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  1. Proton - Wikipedia

    A proton is a stable subatomic particle, symbol p, H +, or 1 H + with a positive electric charge of -1 e (elementary charge). Its mass is slightly less than the mass of a neutron and approximately …

  2. What Is a Proton? Definition and Properties - Science Notes and …

    Dec 8, 2018 · A proton is a subatomic particle with a positive charge. It resides in the atomic nucleus. Atoms consist of smaller particles called protons, neutrons, and electrons. Here is the …

  3. PROTON Definition & Meaning - Merriam-Webster

    : an atomic particle that occurs in the nucleus of every atom and carries a positive charge equal in size to the negative charge of an electron.

  4. PROTON Definition & Meaning | Dictionary.com

    Protons make up part of the nucleus of all atoms except hydrogen, whose nucleus consists of a single proton. In neutral atoms, the number of protons is the same as the number of electrons.

  5. Proton | Definition, Mass, Charge, & Facts | Britannica

    Sep 13, 2025 · It is the positively charged particle that, together with the electrically neutral particles called neutrons, make up the nucleus of an atom. (The nucleus of the ordinary …

  6. What is Proton: Definition, Charge, Mass - Scienly

    Sep 2, 2024 · What is the definition of proton? A proton is a fundamental subatomic particle with a positive electric charge equal in magnitude and opposite to the negative charge of an electron.

  7. Proton: Definition, Characteristics, & Location with Example

    Feb 2, 2023 · A proton is one of the three main subatomic particles that make up an atom. The other two being neutron and electron. The common symbol for a proton is p or p +. The …

  8. Proton Definition - Chemistry Glossary - ThoughtCo

    Jan 7, 2018 · Take a closer look at what a proton is and where it's found. A proton is a component of an atomic nucleus with a mass defined as 1 and a charge of +1. A proton is indicated by …

  9. PROTON | definition in the Cambridge English Dictionary

    Add to word list physics, chemistry the part of an atom that has a positive electrical charge and is part of the atom's nucleus (= central part) (Definition of proton from the Cambridge Academic …

  10. Proton Basics | Structure, Charge & Role

    May 29, 2024 · Protons are positively charged particles, which balances the negative charge of electrons and defines the chemical properties of an atom. Protons are not fundamental …

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