Tags: Question 5 . atomic number and neutrons. What do these isotopes of carbon all have in common? How many neutrons does it have? 60 seconds . The atomic number, #Z#, of any element, is the number of protons, positively charged nuclear particles, contained in the nucleus.The mass number (#235#) is the sum of the number of protons, AND the number of neutrons, NEUTRALLY charged nuclear particles.Note that only protons and neutrons contribute to atomic mass to any degree.. You have #""^235U#.If #Z=92# how many neutrons … When bombarded with neutrons it undergoes fission with the release of energy. How many neutrons does the isotope uranium-235 have - Answer . answer choices . This isotope has half-life of 7.04×10 8 years (6.5 times shorter than the isotope 238) and therefore its abundance is lower than 238 U (99.28%). A) 92 B) 143 C) 235 D) 327 56. Which of the following is not a criterion to make a nuclear bomb? Name: Uranium Symbol: U Atomic Number: 92 Atomic Mass: 238.0289 amu Melting Point: 1132.0 °C (1405.15 K, 2069.6 °F) Boiling Point: 3818.0 °C (4091.15 K, 6904.4 °F) Number of Protons/Electrons: 92 Number of Neutrons: 146 Classification: Rare Earth Crystal Structure: Orthorhombic Density @ 293 K: 18.95 g/cm 3 Color: silverish Atomic Structure Get the answers you need, now! Answered Uranium-235 has 92 protons. See answer the choices are 92, 93, 143, or 235 harmonympaull harmonympaull 55. Uranium-235 (235 U) is an isotope of uranium making up about 0.72% of natural uranium.Unlike the predominant isotope uranium-238, it is fissile, i.e., it can sustain a fission chain reaction.It is the only fissile isotope that exists in nature as a primordial nuclide.. Uranium-235 has a half-life of 703.8 million years. electrons = 92. Uranium has the highest atomic weight (19 kg m) of all naturally occurring elements. Answer and Explanation: How many neutrons does a uranium-235 nucleus have? A) fissionable material B) excess production of neutrons C) nuclear chain reaction D) source of neutrinos to trigger explosion 57. How many neutrons does it have? SURVEY . Uranium-238 isotope is most common isotope of uranium found on Earth (about 99.28% of the entire Earth’s uranium is basically U-238). A uranium nucleus has 92 protons. As all uranium nuclei have 92 protons, the nucleus of a uranium-235 atom will also have 143 neutrons to give it a total atomic mass number of 235. 238. 235 U belongs to primordial nuclides, because its half-life is comparable to the age of the Earth (~4.5×10 9 years). cenzzzzzzzzie cenzzzzzzzzie 05/14/2020 Physics High School +5 pts. Uranium has 92 protons and either 143 or 146 neutrons, for uranium-235 and uranium-238 respectively. 92. atomic number and electrons. It is assigned the chemical symbol U. protons, atomic number, and mass number. Tags: 143. Uranium-235 is an isotope of Uranium-238, all this means is that Uranium-235 has the same number of protons and electrons as Uranium-238, but a different number of neutrons. The half-life of uranium 238 is of 4.5 billion years, while uranium 235 has a … 146. Uranium 235. Even though uranium is abundantly available on Earth, the uranium-235 isotope has low abundancy (only about 0.72% of the entire Earth’s uranium is U-235). How many neutrons does uranium-235 have? neutrons & mass number. Uranium is a silvery-white metallic chemical element in the periodic table, with atomic number 92. All isotopes of uranium are unstable and radioactive, but uranium 238 and uranium 235 have half-lives which are sufficiently long to have allowed them to still be present in the Solar System and indeed on Earth. answer choices . Uranium 235, which alone constitutes 0.72% of natural uranium is the second common isotope of uranium in the nature. 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