Given below are two statements:
Statement (I):
are isomeric compounds.
Statement (II): are functional group isomers.
In the light of the above statements, choose the correct answer from the options given below:
- Statement (I) is incorrect because the compounds shown are not isomeric. Isomerism refers to different compounds with the same molecular formula but different structures or functional groups.
- Statement (II) is also incorrect because \( {NH}_2 \) and \( {NH} \) are not functional group isomers.
Functional group isomers are compounds that have the same molecular formula but differ in their functional groups.
\( {NH}_2 \) is an amine group, while \( {NH} \) is an imine group, but they are not functional group isomers.
Therefore, both statements are false.
The incorrect statements regarding geometrical isomerism are:
(A) Propene shows geometrical isomerism.
(B) Trans isomer has identical atoms/groups on the opposite sides of the double bond.
(C) Cis-but-2-ene has higher dipole moment than trans-but-2-ene.
(D) 2-methylbut-2-ene shows two geometrical isomers.
(E) Trans-isomer has lower melting point than cis isomer.