MCQ
Which one does not exist ?
- A$[CCl_6]^{-2}$
- ✓$[SiF_6]^{-2}$
- C$[GeF_6]^{-2}$
- D$[SnCl_6]^{-2}$
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$I$ . $Zn +$ conc. $HNO_3$ (hot) $\to Zn(NO_3)_2 + X + H_2O$
$II$. $Zn +$ dil. $HNO_3$ (cold) $\to Zn(NO_3)_2 + Y + H_2O$
Compounds $X$ and $Y$ are respectively