there is
cyclobut-1-ene
but-2-yne
but-1-yne
3-methylcycloprop-1-ene
but-1,2-diene
but-1,3-diene
2-methylcycloprop-1-ene
and two more nameless ones, which have the line diagrams:
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and
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There are three possible isomers, a) CH2=C=CH2 , propadiene b) CH≡C-CH3, propyne and c) cyclopropene
Two isomers with the formula C4H10 are:
n-butane: CH3-CH2-CH2-CH3
iso-butane: (CH3)2-CH-CH3
I'll name them instead: propene and cyclopropane
Two: 1,1-dichloroethane and 1,2-dichloroethane.
carbon is small molecule
3-Methyl-1-Butene 2-Methyl-2-Butene 2-Methyl-1-Butene 1,2-Dimethylcyclopropane (this can come in both cis and trans configurations) Ethylcyclopropane Cyclopentane 1-Methylcyclobutane 1-Pentene 2-Pentene (this can come in both cis and trans configurations) 1,1-Dimethylcyclopropane
only two structural isomers are possible, 1-chloropropane and 2-chloropropane
These are not optical isomers they are functional group isomers a subcategory of structural isomers.
There is only 1 form of propanal.
There are only two polar isomers for c2h2cl2 molecule.
If they're isomers, they by definition have the same molecular formula.
Two: 1,1-dichloroethane and 1,2-dichloroethane.
Butune is a nonsubstituted alkane that can exist as one of only two isomers.
carbon is small molecule
Yes. Two isomers of toluene are known as toluene-2,4-diisocyanate and toluene-2,6-diisocyanate
C4h6
pentane
3-Methyl-1-Butene 2-Methyl-2-Butene 2-Methyl-1-Butene 1,2-Dimethylcyclopropane (this can come in both cis and trans configurations) Ethylcyclopropane Cyclopentane 1-Methylcyclobutane 1-Pentene 2-Pentene (this can come in both cis and trans configurations) 1,1-Dimethylcyclopropane
Two compounds that have the same molecular formula but different structural formulas are isomers of each other.
dimethylether or methoxymethane (C - O - C)