SHMHard

Question

The hyperconjugative stbilities of tert-butyl cation and 2-butene respectively, are due to

Options

A.

σ → P (empty) and σ → π* electron delocalisations

B.σ → σ* and σ → π electron delocalisations
C.σ → p (filled) and σ → π electron delocalisations
D.

p (filled) → σ* and σ → π*  electron delocalisations

Solution

Hyperconjugative stabilities of ter-butyl cation [] and 2-Butene [CH3-CH=CH-CH3]
involves and respectively
                                                                   π*=Antibonding molecular orbital
                                                                   π=Bonding molecular orbital

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