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Nuclear properties (deuteron) Deuteron mass and radius. The nucleus of deuterium is called a deuteron. It has a mass of 2.013 553 212 544 (15) Da (just over 1.875 GeV/c 2). The charge radius of the deuteron is 2.127 78 (27) × 10 −15 m. Like the proton radius, measurements using muonic deuterium produce a smaller result: 2.125 62 (78) fm.
(atomic mass 2.014 101 777 844 (15) Da), the other stable hydrogen isotope, is known as deuterium and contains one proton and one neutron in its nucleus. The nucleus of deuterium is called a deuteron.
: 25 Nevertheless, Rutherford had conjectured the existence of the deuteron, a +1 charge particle of mass 2, and the neutron, a neutral particle of mass 1.: 396 The former is the nucleus of deuterium, discovered in 1931 by Harold Urey. The mass of the hypothetical neutral particle would be little different from that of the proton.
The free neutron has a mass of 939 565 413.3 eV/c 2, or 939.565 4133 MeV/c 2. This mass is equal to 1.674 927 471 × 10 −27 kg, or 1.008 664 915 88 Da. The neutron has a mean square radius of about 0.8 × 10 −15 m, or 0.8 fm, and it is a spin-½ fermion. The neutron has no measurable electric charge.
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 1,836 times the mass of an electron (the proton-to-electron mass ratio ). Protons and neutrons, each with masses of approximately one atomic mass unit, are ...
B − L. −1. X. −3. A neutrino ( / njuːˈtriːnoʊ / new-TREE-noh; denoted by the Greek letter ν) is a fermion (an elementary particle with spin of 1 2) that interacts only via the weak interaction and gravity. [2] [3] The neutrino is so named because it is electrically neutral and because its rest mass is so small ( -ino) that it was ...
Hydrogen–deuterium exchange. Hydrogen–deuterium exchange (also called H–D or H/D exchange) is a chemical reaction in which a covalently bonded hydrogen atom is replaced by a deuterium atom, or vice versa. It can be applied most easily to exchangeable protons and deuterons, where such a transformation occurs in the presence of a suitable ...
A hydrogen atom is an atom of the chemical element hydrogen. The electrically neutral atom contains a single positively charged proton and a single negatively charged electron bound to the nucleus by the Coulomb force. Atomic hydrogen constitutes about 75% of the baryonic mass of the universe. [1]