The nucleon and proton numbers of of a neutral atom of an element are 238 and 92 respectively. Determine the number of neutrons in that atom

The nucleon number of an atom is the sum of the number of protons and the number of neutrons in the atom. We are told that the nucleon number of an atom is $238$ and the proton number is $92$. Therefore, the number of neutrons in the atom is $238 - 92 = 146$