The order of stability of the following tautomeric compound is CH_(2) = oversetoverset(C ) - CH_(2) - oversetoverset(O)("||")C - CH_(3) hArr CH_(3) - oversetoverset(O)("||")C-CH_(2) - oversetoverset(O)("||")C - CH_(3)hArr CH_(3) - oversetoverset(OH)(|)C = CH - oversetoverset(O)("||")C - CH_(3)

The order of stability of the following tautomeric compound is CH_(2)

1.	The order of stability of the following tautomeric compound is CH_(2) = oversetoverset(C ) - CH_(2) - oversetoverset(O)("\|\|")C - CH_(3) hArr CH_(3) - oversetoverset(O)("\|\|")C-CH_(2) - oversetoverset(O)("\|\|")C - CH_(3)hArr CH_(3) - oversetoverset(OH)(\|)C = CH - oversetoverset(O)("\|\|")C - CH_(3)
Answer» III `gt` II `gt` I II `gt` I `gt` III II `gt` III `gt` I O `gt` II `gt` III SOLUTION :`CH_(3) - oversetoverset(OH)(\|)C = CH - oversetoverset(O)(\|)C-CH_(3)` This is more stable because of INTRA molecular hydrogen bonding and conjugation of L.P and `pi` - electrons and between `pi`- electrons