Of the unstable nuclides of fluorine, 18F has the longest half-life, 109.739 minutes. State the number of protons, neutrons, and electrons for fluorine-19. From greatest to least, rank them by the number of protons in the nucleus.? To determine the number of neutrons, subtract the atomic number from the mass number. DrBob1. Name: Fluorine Symbol: F Atomic Number: 9 Atomic Mass: 18.9 Number of Protons/Electrons: 9 Number of Neutrons: 10 Classification: Halogens Discovery: 1886 Discoverer: Joseph Henri Moissan Uses: Refrigerants How many protons and neutrons are there in a fluorine-18 atom? Fluorine-18 Radiochemistry Pei Yuin Keng Scholars Trained in Advanced ... Properties of Fluorine 6 Atomic number (199 189) Atomic mass # Neutrons + Protons # Protons 19F 18F 1s2 2s2 2p5 Electron configuration chemical reactivity (electrons!!) Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images. Answer Save. Lv 7. a) 18/8 O and 19/9 F have the same number of neutrons b) 14/6 C an 14/7 N are isotopes of each other because their mass numbers are the same c) 18/8 O 2- has the same number of electrons as 20/10 Ne d) A and B e) A and C Fluorine's atomic number is 9 and its atomic weight is 18.998, so 18.998-9= 9.998. Consider the atoms (a) F-18, (b) O-16, and (c) O-18. Element Fluorine (F), Group 17, Atomic Number 9, p-block, Mass 18.998. Fluorine-18 atom is the radioactive isotope of fluorine with relative atomic mass 18.000938. The total number of neutrons in the nucleus of an atom is called the neutron number of the atom and is given the symbol N.Neutron number plus atomic number equals atomic mass number: N+Z=A.The difference between the neutron number and the atomic number is known as the neutron excess: D = … 1320 Orlando Ave, Winter Park, FL 32789 Suite #3. Mass numbers of typical isotopes of Fluorine are 19. Fluorine is a chemical element with atomic number 9 which means there are 9 protons in its nucleus. 1 Answer. F F F e-F - 1s2 2s2 2p6 OCTET! Fluorine-19 is the only stable isotope of fluorine. The number of neutrons in the nucleus of a Bromine atom that has a mass number of 80 is a. Fluorine-19. For this reason 18F is a commercially important source of positrons. Fluorine-18 is the lightest unstable nuclide with equal odd numbers of protons and neutrons, having 9 of each. It has two decay modes, of which the main one is positron emission. Make an Appointment Its abundance is 100%; no other isotopes of fluorine … (1) The radioactive isotope fluorine-18 is used in medical imaging as indicated on the table above. Neutron Number and Mass Number of Fluorine. (407) 504-0117. Consequently, 9.998 is fluorine's number of neutrons. The longest-lived fluorine radionuclide with half-life of 109.77 min. From greatest to least, rank them by the number of nucleons in the nucleus. 1s2 2s2 2p6 OCTET! (See also the "magic numbers" discussion of nuclide stability.) _____protons _____neutrons (2) When the nuclide fluorine-18 decays as indicated on the table: the number of protons in the product nuclide is: _____ the number of neutrons in the product nuclide is: _____ Relevance. From greatest to least, rank them by the number of neutrons in the nucleus. Fluorine-18 is composed of 9 protons, 9 neutrons, and 9 electrons.