Question

Number of nucleons present in 0.2 g of D20 is (NA: Avogadro Number)
O 0.2 NA
O 0.4 NA
O 0.6 NA
0 1.2 NA​

Answer 1

Answer:

In D2O, First, let us consider Deuterium which has 2 nucleons namely one proton and one neutron. Second, Oxygen has 16 nucleons which 8 each of protons and neutrons. So 1 molecule of D2O has 20 nucleons in total

I hope it will be helpful to you friend