MCQ
Which one of the following molecules is paramagnetic
- A$C{O_2}$
- B$S{O_2}$
- ✓$NO$
- D${H_2}O$
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$B.E. (H-H) = x_1 ; B.E. (O = O) = x_2$ ;
$B.E. (O -H) = x_3$
Heat of vaporisation of water $= x_4$ then $\Delta {H_f}$ [heat of formation of liquid water] is

