Why is $lithium$ superoxide $(LiO_2)$ not possible?
(N/A) The stability of superoxides increases with an increase in the size of the alkali metal cation due to the increase in lattice enthalpy.
$Lithium$ $(Li^+)$ has a very small ionic radius,which results in a lower lattice enthalpy for $LiO_2$ compared to the superoxides of larger alkali metals.
Therefore,$LiO_2$ is thermodynamically unstable and does not exist under normal conditions.
$Lithium$ $(Li^+)$ has a very small ionic radius,which results in a lower lattice enthalpy for $LiO_2$ compared to the superoxides of larger alkali metals.
Therefore,$LiO_2$ is thermodynamically unstable and does not exist under normal conditions.
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Match List-$I$ with List-$II$.
List-$I$ List-$II$ $(a)$ $Li$ $(i)$ Absorbent for carbon dioxide $(b)$ $Na$ $(ii)$ Electrochemical cells $(c)$ $KOH$ $(iii)$ Coolant in fast breeder reactors $(d)$ $Cs$ $(iv)$ Photoelectric cell
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| List-$I$ | List-$II$ |
| $(a)$ $Li$ | $(i)$ Absorbent for carbon dioxide |
| $(b)$ $Na$ | $(ii)$ Electrochemical cells |
| $(c)$ $KOH$ | $(iii)$ Coolant in fast breeder reactors |
| $(d)$ $Cs$ | $(iv)$ Photoelectric cell |
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