Two isotopes of uranium are designed as \(^{238}U\) and \(^{235}U\). The numbers 238 and 235 represent their
- atomic numbers
-
nucleon numbers
- proton numbers
- neutron numbers
The correct answer is: B
Explanation
neutrons + protons = the nucleus or mass numbers.U-238 has mass number(proton 92 + neutron 146=238)
U-235 has mass number (proton 92 + neutron 143 =235)