What is the nuclide symbol and nuclide name described by the following particle: 92 protons and 146 neutrons?

1 Answer
May 23, 2017



In order to find the identity of the nuclide, you need to know two things

  • the atomic number of the atom
  • the mass number of the atom

The atomic number, #Z#, is given by the number of protons present inside the nucleus, so you can say that your nuclide has an atomic number equal to #92#.

The mass number, #A#, is given by the number of protons and neutrons present inside the nucleus.

#color(blue)(ul(color(black)(A = Z + "no. of neutrons")))#

In your case, the mass number of the nuclide is equal to

#A = 92 + 146 = 238#

Now, isotope notation makes use of the atomic number and the mass number of the nuclide.


The identity of the nuclide is given by the atomic number, so grab a periodic table and look for the element that has #Z = 92#.

This element is uranium, #"U"#. To write the name of the nuclide, add the mass number after the name of the element


Consequently, you can say that the nuclide symbol will be

#""_(color(white)(1)92)^238"U" -># uranium-238