Determine the number of protons and neutrons in uranium 235


The number of protons and neutrons in uranium-235,  the  number of proton in an atom is h atomic number while the mass number is the number of neutrons in the atom, therefore the number of uranium-235 with atomic number of 92 is their 92,  but for the number neutrons let we can use formular ,
 N = A-Z
 N is the number of neutrons, a is the mass number which is 235 or the sum of protons and neutrons in the atom while z is the atomic number 92, , therefore  find the number of neutron we do the following

 Z = 235-92 = 143

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