Which one of the carbocations from the following is most stable?
(3) [figure]
+M of the O lone pair stabilises a cation; -I of F or C=O destabilises it.
(C): O is on the allyl system extra resonance form, all atoms with octet:
[figure] [figure]
(A) O not conjugated; (B) lone pair shared with C=O; (D) strong -I of F.
Answer: (3)
In the given structure, number of sp and sp2 hybridized carbon atoms present respectively are : [figure]
The hydrocarbon (X) with molar mass 80 g mol-1 and 90\% carbon has degree of unsaturation.
The correct stability order of the following species/molecules is : [figure]
The IUPAC name of the following compound is : [figure]
The most stable carbocation from the following is :
The alkane from below having two secondary hydrogens is :
Relative stability of the contributing structures is : [figure]
Correct order of basic strength of Pyrrole, Pyridine and Piperidine is : [figure]
How many compounds among the following compounds show inductive, mesomeric as well as hyperconjugation effects? [figure]
The correct stability order of the following resonance structures of CH3-CH=CH-CHO is [figure]
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