MCQ
Assuming $2 s-2 p$ mixing is $NOT$ operative, the paramagnetic species among the following is :
- A$Be _2$
- B$B_2$
- ✓$C _2$
- D$N _2$
$\sigma 1 s^2, \sigma^* 1 s^2, \sigma 2 s^2, \sigma^* 2 s^2, \sigma 2 P_x^2\left[\begin{array}{l}\pi 2 p_y^1 \\ \pi 2 p_z^1\end{array}\right]$
Considering this $Be _2$ and $B _2$ become diamagnetic, so does $N _2$. Only $C _2$ would be paramagnatic with electronic configuration as above
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| List$I$ | List$II$ |
| $A.$ Cobalt catalyst | $I.$ $\left( H _2+ Cl _2\right)$ production |
| $B.$ Syngas | $II.$ Water gas production |
| $C.$ Nickel catalyst | $III.$ Coal gasification |
| $D.$ Brine solution | $IV.$ Methanol production |
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