IUPAC Nomenclature: In the NEET syllabus, students are expected to understand the systematic naming of organic compounds according to the rules laid out by the International Union of Pure and Applied Chemistry (IUPAC). This includes naming alkanes, alkenes, alkynes, cyclic compounds, functional gro...
Compounds having same molecular formula but atleast one
r
difference in their properties. (Physical,Chemical or both)
If D.U is different, molecular formula can’t be same.
r
If D.U is same, MF may/may not be same.
Never count H- atoms, while checking molecular formula.
r
Types
Structural Isomers Stereoisomers
,Structural isomers:-
MF same but structure different.
n
Arrangement/Sequence/Connectivity of atoms different.
Two structural isomers can never have same IUPAC.
r
Chain isomers
Position isomers
Types
Functional/group isomers
Metamers
Tautomers
,Chain isomers:- have different no. of C-atoms in P.C.C & side
carbon chain.
Eg:-
, Determine min. no of C-atoms C are required for an
open chain alkane to show isomerism.
C —C—C—C C—C—C
: C
(1)For a cycloalkane to show chain isomerism
(2)For an alkene
C—C—C—C C—C—C
C
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