fast neutronsironmeteoritesneutron fluxnuclear reactionsphosphorus 32productionprotonsNUCLEAR reactions induced by neutrons in meteorites have been discussed by a number of authors 1–6 . A few radioactive and stable isotopes, produced mainly by thermal and epithermal neutrons, have been measured 7–15 ...
The abundances of PN and PO relative to H2were calculated to be 3.0 ± 1.6 × 10−12and 2.0 ± 1.1 × 10−11, respectively. These values are comparable to those found in the solar neighbourhood, as shown in Fig.3. A linear fit to the PO and PN abundances with...
Phosphorus 32 (P-32) is the phosphorus isotope whose nucleus consists of 15 protons and 17 neutrons. It disintegrates by emitting a β- (1.71 MeV) particle in 32S with a half-life of 14.263 days. It is an artificial radioactive substance obtained by neutron bombardment of stable phosphorus...
Name origin:Greekphôsandphoros Appearance:white/red/black Discoverer:Hennig Brand Obtained from:phosphate rock Melting point:317 K Boiling point:550 K Density[kg/m3]:1823 Molar volume:17.02 × 10-6m3/mol Protons/Electrons:15 Neutrons:16 ...
capture of protons on Si. Very large amounts of P, O, Mg, Si and Al are predicted by the existing models, although the exact yields (again) strongly depend on the white dwarf type and on the thermonuclear conditions24,65(Fig.6). The idea that novae could significantly pollute their ...
What nuclide has 27 protons and 33 neutrons? Which gas below was not found in the earth's earliest atmosphere? a. O2 b. SH2 c. CH4 d. NH3 e. all the above Which element has the same number of valence electrons as nitrogen (N)? a. carbon (C) b. phosphorus (P) c. neon (Ne...
What is phosphorus (element 15), its white and red allotropic forms, is it a metal nonmetal or metalloid, how many electrons, protons, neutrons does it have
When Hennig Brand discovered phosphorus, he became the first person in history to discover an element. (Of course, other elements such asgoldandsilverwere already known – but they had no named discoverer.) The case is similar to the discovery of Uranus by William Herschel in 1781. Other pl...
the number of protons in the nucleus of the atom. b. the number of neutrons in the nucleus of the atom. c. the number of electrons in the outer or Which of the following are formed elements: white blood cells, red blood ...
Answer and Explanation: (a) {eq}\rm ^8_5 B {/eq}. The number of protons of B is 5 and neutrons 3. To approach the ideal proton-to-neutron ratio, which is 1, some of the... Learn more about this topic: Radioactive Decay |...