Final answer:
The compound that does NOT have the same empirical formula as NH₂ is NH₃.
Step-by-step explanation:
To determine which of the following compounds does NOT have the same empirical formula as NH₂, we need to compare the ratios of atoms in each compound.
The empirical formula for NH₂ indicates that there is 1 nitrogen atom and 2 hydrogen atoms.
Looking at the given compounds, N₂H₄ has 2 nitrogen atoms and 4 hydrogen atoms, while NH₃ has 1 nitrogen atom and 3 hydrogen atoms. Both of these compounds have different ratios of atoms compared to NH₂. Therefore, the correct answer is C. NH₃.