in CH2=C=CH2

it is given that the length between H of first carbon at top and H of last carbon at top is L1 and length between H of first carbon at top and H of last carbon at bottom is L2.

what is the relation between L1 and L2?

options are-

L1=L2;

L1

L1>L2;

'x' gm of a compound A3B2C5 contains 'y' gm of A atoms

 

Using above information

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how to represent the possible fischer projections for 2-bromohexane