240
238 is 28% of 850
thirty
Number of neutrons = Mass number - atomic number = 238 - 92 = 146
thirty
It is 8 units, so its value is 8.
EE.
Uranium-238 has 92 protons, 92 electrons and 146 neutrons.The mass number is 238 and the atomic number is 92.
They represent the number of nucleons.
No element has the atomic number 238. At present, the periodic table only goes up to atomic number 118.
Protons = 92 Neutrons 238-92 = 146
238