MCQ
Which of the following species contain only $\pi \,-\,$ bond but exhibit paramagnetic nature ?
- A$C_2$
- ✓$B_2$
- C${O_2}^{-1}$
- D$N_2$
✓
Answer
Correct option: B.
$B_2$
b
${B_2}\,\Rightarrow B\mathop - \limits^{\pi} B \,$ as per per $M.O.T.$
${B_2}\,\Rightarrow B\mathop - \limits^{\pi} B \,$ as per per $M.O.T.$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
The correct order of $I.E_2.$ is
→The first and second dissociation constants of an acid $H_2A$ are $1.0 \times 10^{-5}$ and $5.0 \times 10^{-10}$ respectively. The overall dissociation constant of the acid will be
→Radius of $1^{\text {st }}$ orbit of $H$ and some orbit of $Be ^{3+}$ is same . Energy of their orbit of $Be ^{3+}$ is ............$eV$
→Cylohexene $image$ is __________type of an organic compound.
→The $pH$ of $ 0.1 \,M$ solution of a weak monoprotic acid $1\%$ ionized is
→The compound $1, 2-$butadiene has
→The correct order of electron affinity of $B, C, N, O$ is
→Which compound shows dipole moment
Which of the following structure represent meso-compound ?
Match the conditions and the temperature for the 'fusion' process of $H_2O(s)$ at $1\, atm$ pressure
→| Condition | Temperature |
| $(1)$ Spontaneous | $(p)$ $273\,K$ |
| $(2)$ At equilibrium | $(q)$ $260\, K$ |
| $(3)$ Non-spontaneous | $(r)$ $280\, K$ |