There are TWO atoms in one molecule of hydrogen.
I wish I could help you, but I cannot see your paper. Please re-upload so I can help you : )
Answer:
the overall charge on the nitride anion is
(
3
−
)
.
N power 3
− →
the nitride anion
D, because C12 means there's 12 atoms of carbon.
There is no list, but possibly evaporation.
