Compound $PdCl_4 .6H_2O$ is a hydrated complex; $1\, molal$ aqueous solution of it has freezing point $269.28\, K$. Assuming $100\%$ ionization of complex, calculate the molecular formula of the complex ($K_f$ for water $= 1.86\, K\, kg\, mol^{-1}$)
→Which of the following $IUPAC$ name is correct for $\begin{array}{*{20}{c}}
{C{H_2} - CH - C{H_2}}\\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,}\\
{\,\,CHO\,\,\,CHO\,\,CHO}
\end{array}$ ?
→