2019 · Q32
The number of neutrons inside the nucleus of the element Uranium-235 is
general-sciencephysics-mechanics
- A235
- B92
- C143
- D51
Explanation
Uranium-235 has mass number 235 and atomic number 92 (protons). The number of neutrons equals mass number minus atomic number: 235 - 92 = 143. Hence C.