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Proton

Proton
Proprietates generales
DefinitioNucleon
Compositio2 quarcia u ("sursum")
1 quarcium d ("deorsum")
Proprietates physicae
Massa938.272 029 MeVc−2
(1.672 623×10−27 kg)
Onus electricum1.602 176 53×10−19 C
Onus coloris0
Volubilitas1/2
Longaevitas mediaStabilis
(plus quam 1030 s)

Proton (-onis, m.)[1] (littera minore p sive p+ indicata) est particula subatomica ex tribus quarcis facta, scilicet e duobus quarcis u unoque quarco d. Ergo habet onus electricum +1 (onus elementarium). Massa singularis protonis est 1.672 622 x 10-27kg.

Cuique atomo unus vel plus protonum sunt, pernecesse sunt integritatis nuclei. Numerus atomicus est protonum numerus in atomi nucleo, quodque elementum destinans. De consuetudine, numerus atomicus latere sinistro et infero symboli elementi scribitur, ut:

12
6
C
(atomo carbonii C numerus 6 est = 6 protones; 12 est summa protonum et neutronum)

Si electron ex hydrogenio evadit, nucleus nudus est et solum ex protone consistit. Ergo cationum hydrogenii (H+) etiam proton nominatur.

Inveniuntur protones in vento solari, radiatione cosmica (extrasolari et solari).

Praeterea exstat antiproton onere electrico negativo -1.

  1. Ebbe Vilborg, Norstedts svensk-latinska ordbok. Andra upplagan. Norstedts akademiska förlag, Stockholm, 2009

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