Neutron
Li neutron es un particul subatomic con zero nett charge electric e un masse un poc plu grand quam un proton.
Con li exception de hidrogen, nucleos de atomes consiste de protones e neutrones, quel es dunc colectivmen nominat nucleones.
Li númere de protones in un nucleo es li númere atomic e defini li tip de elemente li atom forma. Li númere de neutrones es li númere neutronic e determina li isotop de un elemente. Por exemple, li abundant carbon-12 isotop have 6 protones e 6 neutrones, e li plu rar e radioactiv carbon-14 isotop have 6 protones e 8 neutrones.
Neutrons e protons ne es particules elementari, pro que chascun es composit de tri quarkes, simil altri baryones. Insimil protones, liber neutrones (neutrones extern un nucleo) ne es stabil, ma desintegra ad-in un proton, electron, e neutrino con un mi-vive de 879,4 secondes per desintegration beta.
Vide anc
- Isotop
- Nucleon
- Particul subatomic
Referenties
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