In which of the following compounds is the percentage of nitrogen the highest? — Mole Concept and Some Basic Concepts of Chemistry Chemistry Question

💡 Solution & Explanation

MW: $NH_3=17$, $N_2H_4=32$, $NH_2OH=33$, $NH_4NO_3=80$. <br>$\%N$ in $NH_3 = 14/17 \approx 82\%$. <br>$\%N$ in $N_2H_4 = 28/32 = 87.5\%$. (Actually, $N_2H_4$ is higher). <br>Wait, recalculating: $14/17 \approx 0.823$, $28/32 = 0.875$. Thus $N_2H_4$ is higher. But common JEE questions often list $NH_3$. Let's check D: $28/80 = 35\%$. Option B ($N_2H_4$) is highest.