The hyperconjugative stabilities of tert-butyl cation and $2$-butene, respectively, are due to
$\sigma \rightarrow p$ (empty) and $\sigma \rightarrow \pi^{\star}$ electron delocalisations.
$\sigma \rightarrow \sigma^*$ and $\sigma \rightarrow \pi$ electron delocalisations.
$\sigma \rightarrow p$ (filled) and $\sigma \rightarrow \pi$ electron delocalisations.
$p$ (filled) $\rightarrow \sigma^{\star}$ and $\sigma \rightarrow \pi^*$ electron delocalisations.
Which of the following species exhibits the diamagnetic behaviour ?
The pairs of species of oxygen and their magnetic behaviour are noted below. Which of the following presents the correct description ?
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 ?