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Answer Posted / mrdeva
Compounds that exist in 2 structural isomeric forms which
are mutually interconvertible and exist in dynamic
equilibrium are called tautomers and the phenomenon is
called tautomerism.
The Tautomer containing the carbonyl group (co) is
designated as keto or "lactam" form and the other one
having hydroxy group (-oh) attached to a double bonded
carbon atom is refered as enol or "Lactim" form.
This kind of tautomerism is called as "LACTAM-
LACTIM "tautomerism.
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