- AChain isomers
- BFunctional isomers
- CTautomers
- ✓Geometrical isomers
$\mathop {\begin{array}{*{20}{c}}
{H - C - COOH} \\
{||\,\,\,\,\,\,\,\,\,\,\,} \\
{H - C - COOH}
\end{array}}\limits_{Maleic\,acid} $ $\mathop {\begin{array}{*{20}{c}}
{H - C - COOH} \\
{||\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{HOOC - C - H\,\,\,\,\,\,}
\end{array}}\limits_{Fumaric\,acid} $
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$(i)$ $C{H_3} - C \equiv C - C{H_3}$
$(ii)$ $C{H_3} - C{H_2} - C{H_2} - C{H_3}$
$(iii)$ $C{H_3} - C{H_2} - C \equiv CH$
$(iv)$ $C{H_3} - CH = C{H_2}$


$(A)$ Ethane-$1\ 2$-diamine is a chelating ligand.
$(B)$ Metallic aluminium is produced by elecrtrolysis of aluminium oxide in presence of cryolite.
$(C)$ Cyanide ion is used as ligand for leaching of silver.
$(D)$ Phosphine act as a ligand in Wilkinson catalyst.
$(E)$ The stability constants of $\mathrm{Ca}^{2+}$ and $\mathrm{Mg}^{2+}$ are similar with $EDTA$ complexes.
Choose the correct answer from the options given below: