Q. The isotope deuterium of hydrogen has
A. No neutrons and one proton
B. One neutrons and two protons
C. One electron and two neutron
D. One proton and one neutron
Answer: One proton and one neutron
A. No neutrons and one proton
B. One neutrons and two protons
C. One electron and two neutron
D. One proton and one neutron
Answer: One proton and one neutron