The symbol for all the isotopes of uranium is U. A number is added after U - the Atomic Mass of a specific isotope; for example U-235, U-240, etc.
n
Example for the uranium isotope 235: 23592U where 235 is the mass number and 92 is the atomic number. Note 92 is under 235 but I cannot write here.
The mass number of an isotope of an element is defined as the sum of the numbers of protons and neutrons in the nucleus of each atom of the isotope. The atomic number is defined as the number of protons only in the nucleus. Therefore, an atom with an atomic number of 6 has 6 protons in its nucleus.
All the atoms of an element have the same number of protons in the nucleus of each atom. When the nucleus of a radioactive element such as Uranium splits into pieces, the "new" atoms formed have smaller numbers of protons in each atom.
The abundance percentage of each isotope
Number of neutrons = Atomic mass of an isotope - Atomic number of the element; the atomic number of Lr is 103. Lawrencium has many isotopes and each isotope has a different number of neutrons.
Number of neutrons in an atomic nucleus = Atomic mass of an isotope - Number of protons in the nucleus For uranium the number of protons is 92; each isotope has of course a different mass.
Uranium atom has 92 protons and electrons; the number of neutrons is different for each isotope.
Each isotope of uranium has its half life. See the link below.
Uranium has 92 protons and electrons; the number of neutrons is different for each isotope: number of neutrons = atomic mass of an isotope - atomic number of uranium (92)
92 protons, 92 electrons and a variable number of neutrons (each isotope has a specific number of neutrons) - the number of neutrons for a given isotope is the difference between the atomic number and the number of protons.
Uranium neutral atom has 92 protons and electrons; the number of neutrons is different for each isotope.
Uranium has many isotopes and each isotope has a different number of neutrons (N). N = atomic weight of the isotope - atomic number of uranium (A=92) The number of neutrons of the isotope 92U238 is 238-92=146 and the number of neutrons of the isotope 92U235 is 235-92=143.
The nucleus of fermium contain 100 protons.For each isotope the number of neutrons is different.Number of neutrons = Mass number of an isotope - 100
The uranium nucleus has 92 protons, 92 electrons an a different number of neutrons, specific for each isotope.
The number of neutrons in the nucleus, the number of protons is the same for each isotope of a given element.
All the isotopes of uranium contain 92 protons; the number of neutrons is variable for each isotope: Number of neutrons = Atomic weight of the given isotope - 92
Uranium-235 has 143 neutrons; uranium-238 has 146 neutrons. Each isotope has a different number of neutrons.