Answer:
Lowest: NF3, PBr3, NCl3: Highest
Explanation:
NCl3 is the highest because of the inoic bonds
PBr3 is higher than NF3 because of the larger molar mass.
Just be bold and ask him
3H2 + N2 → 2NH3
3H2 + 1N2 → 2NH3
Or
No question so I'm just taking the points