The mass number of an element is equal to the number of __________ in the nucleus.
A. Electrons
B. Neutrons
C. Protons
D. Neutrons plus protons (i.e., nucleons)
Answer: Option D
Related Questions on Nuclear Power Engineering
Heavy water (D2O) in a nuclear reactor serves as a
A. Coolant
B. Moderator
C. Both A & B
D. Neutron absorber
Moderating material used in a thermal-reactor should be a
A. Good absorber of neutrons
B. Solid substance
C. Poor absorber of neutrons
D. None of these
Join The Discussion