Number of geometrical isomers for the molecules if R is same?
A
5
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B
3
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C
4
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D
6
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Solution
The correct option is B 3 The given compound has two double bond and it is symmetrical if it has same R group at the terminals.
This arrangement of molecules, will have 3 geometrical isomers.
They are
(i) Cis, Cis
(ii) Trans, Trans
(iii) Cis, Trans/ Trans, Cis
For this kind of arrangement, both Cis, Trans and Trans, Cis isomers are identical.