MCQ
Which of the following is paramagnetic ?
- ✓$O_2[AsF_6]$
- B$Al_2O_3$
- C$C_2$
- D$Be_2$
$\mathrm{C}_{2}=\sigma 1 \mathrm{s}^{2}, \sigma^{*} 1 \mathrm{s}^{2}, \sigma 2 \mathrm{s}^{2}, \sigma^{*} 2 \mathrm{s}^{2}, \pi 2 \mathrm{p}_{\mathrm{x}}^{2}, \pi 2 \mathrm{p}_{\mathrm{y}}^{2}$
Number unpaired electrons.
$\mathrm{Be}_{2}=\sigma 1 \mathrm{s}^{2}, \sigma^{*} 1 \mathrm{s}^{2}, \sigma 2 \mathrm{s}^{2}, \sigma^{*} 2 \mathrm{s}^{2}$
No unpaired electrons.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.