fluorine isotope with 10 neutrons
the aluminum isotope with 14 neutrons.

The most abundant isotope, 40Ca, as well as the rare 46Ca, are theoretically unstable on energetic grounds, but their decay has not been observed. Tables, graphs, and references", https://en.wikipedia.org/w/index.php?title=Isotopes_of_fluorine&oldid=972131413#Fluorine-18m, Creative Commons Attribution-ShareAlike License, This page was last edited on 10 August 2020, at 09:55. Tables, graphs, and references". Most of its production is in the upper metre or so of the soil column, where the cosmogenic neutron flux is still sufficiently strong. 24.56 amu. The most stable artificial radioisotopes are 45Ca with a half-life of 163 days and 47Ca with a half-life of 4.5 days. The shortest-lived known isotope is nitrogen-10, with a half-life of about 200 yoctoseconds.

Calcium also has a cosmogenic isotope, radioactive 41Ca, which has a half-life of 99,400 years. So in answer to your real question, adding a proton to a fluorine nucleus that had 9 protons and 10 neutrons, you would have created the element neon (the element on the periodic table with the Atomic Number 10).

207Tl, with a half-life of 4.77 minutes, has the longest half-life of naturally occurring radioisotopes. (See also the "magic numbers" discussion of nuclide stability.)[6]. Sodium has two radioactive cosmogenic isotopes. It has two decay modes, of which the main one is positron emission. Its specific radioactivity is 1.885 × 109 TBq/g and has a lifetime of 15.87 seconds. the fluorine isotope with 10 neutrons. Fluorine-20 is one of the more unstable isotopes of fluorine. Natural nitrogen (7N) consists of two stable isotopes: the vast majority (99.6%) of naturally occurring nitrogen is nitrogen-14, with the remainder being nitrogen-15. The longest-lived is 24Ne with a half-life of 3.38 minutes. Three of those isotopes occur naturally: the two stable forms 39K (93.3%) and 41K (6.7%), and a very long-lived radioisotope 40K (0.012%). For this reason 18F is a commercially important source of positrons. The shortest-lived are 29Cl and 30Cl, with half-lives less than 10 picoseconds and 30 nanoseconds, respectively—the half-life of 28Cl is unknown. In addition, 17 radioactive isotopes have been discovered ranging from 15Ne to 34Ne, all short-lived. [2] The half-life of 26mF is 2.2(1) milliseconds; it decays mainly to the ground state of 26F or (rarely, via beta-minus decay) to one of high excited states of 26Ne with delayed neutron emission. Fluorine-20 is one of the more unstable isotopes of fluorine. Fluorine (9 F) has 17 known isotopes, with atomic masses ranging from 14 F to 31 F (with the exception of 30 F), and two isomers (18m F and 26m F). Note that #""^19F# is 100% spin active #("I=1/2")#, it can be regularly used in #"NMR spectroscopy"#. Naturally occurring europium (Eu) consists of two isotopes with a mass of 151 and 153. Calculate the atomic mass of magnesium. Aluminium isotopes have found practical application in dating marine sediments, manganese nodules, glacial ice, quartz in rock exposures, and meteorites. Only fluorine-19 is stable and naturally occurring; therefore, fluorine is a monoisotopic element and only artificially produced fluorine isotopes have atomic masses other than 19.. ( ) spin value – Indicates spin with weak assignment arguments. The lighter isotopes mostly decay to isotopes of sodium while the heavier isotopes decay to isotopes of aluminium.

Half-life, decay mode, nuclear spin, and isotopic composition is sourced in: "The NUBASE2016 evaluation of nuclear properties", "The AME2016 atomic mass evaluation (II). This is also the only carbon radioisotope found in nature—trace quantities are formed cosmogenically by the reaction 14N + 1n → 14C + 1H.

around the world. [2], # – Atomic mass marked #: value and uncertainty derived not from purely experimental data, but at least partly from trends from the Mass Surface (, # – Values marked # are not purely derived from experimental data, but at least partly from trends of neighboring nuclides (.

The least stable is 29Ar with a half-life of approximately 4×10−20 seconds. Lead (82Pb) has four stable isotopes: 204Pb, 206Pb, 207Pb, 208Pb. All other calcium isotopes have half-lives measured in minutes or less. Strontium consists of four isotopes with masses of 84 (abundance 0.50%), 86 (abundance of 9.9%),... Why are the isotopes of an element chemically similar?

[5], Fluorine-18 is the lightest unstable nuclide with equal odd numbers of protons and neutrons, having 9 of each.

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