Polarisation of electrons in acroline may be written as
$CH_2^{\delta - } = CH - C{H^{\delta + }} = O$
$CH_2^{\delta - } = CH - CH = {O^{\delta + }}$
$CH_2^{\delta - } = C{H^{\delta + }} - CH = O$
$CH_2^{\delta + } = CH - CH = {O^{\delta - }}$
Among the following which one can have a meso form?
The number of all the possible stereoisomers formed by the given compound is
Which of the structures given' below are chiral ?
How are the following compounds related ?
Stereoisomers which are not the mirror images of one another are called