MCQ
From $+6 $ to $+1 $ oxidation state is shown by the element of....... group
- A$V-B$
- ✓$VI-B$
- C$VII-B$
- D$VIII$
Maximum no. of ${e^ - }$ in last shell $= 6$
Group is $ VI-B.$
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(molar mass : $PtCl_2Br_2.6H_2O = 534\ g\,mol^{-1}$)
$(I)$ $B + ANO_3 \to B NO_3 + A$
$(II)$ $A + HCl \to ACl + \frac{1}{2}{H_2}$
$(III)$ $D + ECl \to DCl + E$
$(IV)$ $D + HNO_3 \to H_2$ gas is not evolved


Reason : $SO_2$ is a reducing agent