MCQ
Carbogen is
- APure form of carbon
- B$COC{l_2}$
- CMixture of $CO$ and $C{O_2}$
- ✓Mixture of ${O_2}$ and $C{O_2}$
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$(I)$ Ionization energy $(II)$ Ionic radius
$(III)$ Bond energy of the $X_2$ molecule $(IV)$ Enthalpy of vaporisation
Liquid $\rightleftharpoons $ Vapour
Which of the following relations is correct ?

