Between $NH_3$ and $N_2$,which one has a higher value of $(i) \ a$ and which one has a higher value of $(ii) \ b$? (Where $a$ and $b$ are van der Waals constants.)
- A$NH_3$ has higher $a$ and $N_2$ has higher $b$
- B$N_2$ has higher $a$ and $NH_3$ has higher $b$
- C$NH_3$ has higher $a$ and $NH_3$ has higher $b$
- D$N_2$ has higher $a$ and $N_2$ has higher $b$
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