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

  • [IIT 2013]
  • A

    $\sigma \rightarrow p$ (empty) and $\sigma \rightarrow \pi^{\star}$ electron delocalisations.

  • B

    $\sigma \rightarrow \sigma^*$ and $\sigma \rightarrow \pi$ electron delocalisations.

  • C

    $\sigma \rightarrow p$ (filled) and $\sigma \rightarrow \pi$ electron delocalisations.

  • D

    $p$ (filled) $\rightarrow \sigma^{\star}$ and $\sigma \rightarrow \pi^*$ electron delocalisations.

Similar Questions

Which of the following species exhibits the diamagnetic behaviour ?

  • [AIEEE 2007]

The pairs of species of oxygen and their magnetic behaviour are noted below. Which of the following presents the correct description ?

  • [AIPMT 2011]

Compare the relative stability of the following species and indicate the magnetic properties : ${{\rm{O}}_2}{\rm{,O}}_2^ + ,{\rm{O}}_2^ - $ (super oxide); ${\rm{O}}_2^{2 - }$ (Peroxide)

Out of the following which has smallest bond length

Which of the following is paramagnetic ?