MCQ
Which pair of atoms form strongest ionic bond?
- A$Al$ and $As$
- B$Al$ and $N$
- C$Al$ and $Se$
- D$Al$ and $O$
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$N_2(g) + 3H_2(g) \to 2NH_3(g$) is
$-92.38\, KJ$ at $298\, K$. The internal energy change $\left( {\Delta U} \right)$ at $298\, K$ is ........$KJ$