The configurations of the chirality centres in $D-$ threose (shown) are
$2R, 3R$
$2R, 3S$
$2S, 3R$
$2S, 3S$
Which of the following has chiral structure
How many different stereoisomers are possible for the following compound ?
$\begin{array}{*{20}{c}}
H\\
|\\
{ClHC = HC - C - CH = CHCl}\\
|\\
{Cl}
\end{array}$
The total number of acylic isomers including the stereoisomers with the molecular formula ${C_4}{H_7}Cl$
How are the following compounds related ?