Atomic number mass is big number underneath and number of proton on the right side of a proton and number of neutron is mass - proton and number of electron with bohr digram or outer shell
there are 92 protons and 92 electrons therefore, 238-92=146(neutrons)
No of protons = 92
No of electrons = 92
No of neutrons = 238-92 = 146
Since the definition for isotopes is--Atoms of the same element having the same number of protons but different number of neutrons.
The atoms of carbon 12 contain 6 neutrons while the atoms of carbon 14 contain 8 neutrons