N

Neutron

n⁰; mass ≈ 1.675 × 10⁻²⁷ kg; charge = 0
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Quick Reference
Formula / Notationn⁰; mass ≈ 1.675 × 10⁻²⁷ kg; charge = 0
Also Known Asn⁰, neutral particle, nucleon (uncharged)

What is Neutron?

A subatomic particle found in the nucleus with no electric charge and a mass of approximately 1.675 × 10⁻²⁷ kg (slightly greater than a proton). Neutrons contribute to atomic mass but not atomic number. Free neutrons are unstable and decay with a half-life of about 10 minutes.

Formula & Notation

n⁰; mass ≈ 1.675 × 10⁻²⁷ kg; charge = 0

Other Names / Synonyms: n⁰, neutral particle, nucleon (uncharged)

Properties & Characteristics

A neutron is a subatomic particle found in the nucleus of an atom with no electric charge and a mass slightly greater than a proton. Neutrons contribute to the mass number of an element but not its atomic number. Free neutrons are unstable and decay with a half-life of about 10.3 minutes. The number of neutrons in a nucleus determines the isotope of an element.

Uses & Applications

Neutrons are used in nuclear reactors to sustain fission chain reactions. Neutron scattering is employed in materials science to study atomic structures. Neutron activation analysis is used in geology and forensic science to identify elemental composition.

Safety Information

Free neutrons from nuclear reactions are highly penetrating and can cause biological damage. Neutron radiation requires heavy shielding such as concrete, water, or polyethylene for protection.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Neutron
Formula n⁰; mass ≈ 1.675 × 10⁻²⁷ kg; charge = 0
Synonyms n⁰, neutral particle, nucleon (uncharged)

Frequently Asked Questions

A subatomic particle found in the nucleus with no electric charge and a mass of approximately 1.675 × 10⁻²⁷ kg (slightly greater than a proton). Neutrons contribute to atomic mass but not atomic number. Free neutrons are unstable and decay with a half-life of about 10 minutes.

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Editorial standards: Chemical data is sourced from peer-reviewed literature, CAS Registry, NIST WebBook, and PubChem. Safety information reflects guidance from OSHA, ECHA, and IAEA. For educational purposes only — always consult official SDS documentation and qualified professionals before handling chemicals.