What is proton?
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A proton is a subatomic particle, symbol p or p⁺ , with a positive electric charge of +1e 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 jointly referred to as "nucleons".
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Mass: 1.67262192369(51)×10−27 kg; 938.27208816(29) MeV/c2; 1.007276466621(53) Da
Symbol: p, p+, N+, 1; 1H+
Electric charge: +1 e; 1.602176634×10−19 C
Charge radius: 0.8414(19) fm
Composition: 2 up quarks (u), 1 down quark (d)
Electric dipole moment: < 5.4×10−24 e⋅cm
Electric polarizability: 1.20(6)×10−3 fm3
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Answered by
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- A proton is a subatomic particle with the symbol p or p+ and a mass slightly less than that of a neutron.
- It has a positive electric charge of +1e elementary charge and a mass slightly less than that of a neutron.
- Protons and neutrons, each with a mass of around one atomic mass unit, are referred to as "nucleons" together (particles present in atomic nuclei).
- Every atom's nucleus contains one or more protons; they are an essential component of the nucleus.
- The atomic number, or the number of protons in the nucleus, is the distinguishing feature of an element .
- Each element has its own atomic number because it has a different amount of protons.
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