Phosphorus is a chemical element with atomic number 15 which means there are 15 protons in its nucleus.Total number of protons in the nucleus is called the atomic number of the atom and is given the symbol Z.The total electrical charge of the nucleus is therefore +Ze, where e (elementary charge) equals to 1,602 x 10-19 coulombs. This isotope is phosphorus 31 and atomic number is 15 only. The atomic mass (mass number) is the sum of the protons and neutrons in the nucleus. Potassium has mass number of 39 and atomic range is 19. The nucleus consists of 15 protons (red) and 16 neutrons (blue). Expert Solution. Isotopes are named for their mass numbers. Given: Mass number = 31. What is the atomic structure of phosphorus? This isotope is phosphorus-31, which has atomic number 15. boortza boortza Diagram of the nuclear composition and electron configuration of an atom of phosphorus-31 (atomic number: 15), the most common isotope of this element. check_circle. Atomic Number Protons, Electrons and Neutrons in Phosphorus. Phosphorus-32, a radioactive isotope of phosphorus-31 (atomic number 15), undergoes a from of radioactive decay whereby a neutron turns into a The atomic number of phosphorus is 15, so it has 15 protons. Formula used: Mass number is given by, Mass number = number of protons + number of neutrons. This isotope is stable and thus has no decay products, so instead we show decay chains that lead down to it. The atomic number for any element is the number of protons in its atomic nuclei. The nucleus consists of 15 protons (red) and 16 neutrons (blue). To calculate: Number of neutrons in an atom of phosphorus-31. So, this element has 15 protons (atomic number), 15 electrons, and 16 neutrons (mass number minus atomic number). 15 electrons (green) bind to the nucleus, successively occupying available electron shells (rings). Half-life. Spin 1/2 Parity 1. It increase atomic numbers by taking 15 electrons and 16 neutrons used for mass numeric minus atomic numbers. The most stable isotope of phosphorus is phosphorus-31. In a neutral atom, the number of electrons are the same as the number of protons. This isotope is phosphorus-31, which has atomic number 15. Percentage of neutrons is 16. Explanation of Solution. Follow me and mark as brainliest. Answer to Problem 16.4APP. The longest-lived radioactive isotopes are 33 P with a half-life of 25.34 days and 32 P with a half-life of 14.268 days. Although phosphorus (15 P) has 23 isotopes from 25 P to 47 P, only 31 P is stable; as such, phosphorus is considered a monoisotopic element. Boson, 15p 16n. Phosphorus (P). All others have half-lives of under 2.5 minutes, most under a second. Stable. It has 15 protons, 15 electrons, and 16 neutrons. So, this element has 15 protons (atomic number), 15 electrons, and 16 neutrons (mass number minus atomic number). In a neutral atom, there will also be 15 electrons. 15 electrons (green) bind to the nucleus, successively occupying available electron shells (rings). 31P. Isotopes are named for their mass numbers and known for element that has 15 protons. This is the isotope phosphorus-31. Diagram of the nuclear composition and electron configuration of an atom of phosphorus-31 (atomic number: 15), the most common isotope of this element.