MCQ
Sodium nitroprusside when reacts with solution of $Na_2S$, produces
- A$Na_2[Fe(CN)_5(NOS)]$
- B$Na_4[Fe(CN)_5 (NOS)]$
- C$[Fe(H_2O)_5 NO]SO_4$
- ✓$Na_2[Fe(CN)_5 NO]$
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$(1)$ In gas phase $SO_2$ molecule is $V-$ shape.
$(2)$ In gas Phase $SO_3$ molecule is planar
$(3)$ $\gamma - SO_3$ is cyclic trimer
Which oi the above statement are correct ?

| Compound | $\ce{NH_3}$ | $\ce{PH_3}$ | $\ce{AsH_3}$ | $\ce{SbH_3}$ |
| $\Delta_{\text{diss}}(\text{E}-\text{H})/\text{kJ mol}^{-1}$ | $389$ | $322$ | $297$ | $255$ |