MCQ
Which one does not exist ?
- A$[CCl_6]^{-2}$
- ✓$[SiF_6]^{-2}$
- C$[GeF_6]^{-2}$
- D$[SnCl_6]^{-2}$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
$(a)$ $PhCOOH$
$(B)$ $o-NO_2C_6H_4COOH$
$(C)$ $p-NO_2C_6H_4COOH$
$(D)$ $m-NO_2C_6H_4COOH$
$C_6H_5-CHO + C_6H_5CHO$ $\xrightarrow{{N{a_2}[Fe{{(CO)}_4}]}}$ $\begin{array}{*{20}{c}}
{O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{{C_6}{H_5} - C - O - C{H_2}{C_6}{H_5}}
\end{array}$