Which metal bicarbonates do not exist in the | vedclass

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(A) Most metal bicarbonates,except for those of alkali metals (like $NaHCO_3$,$KH_3$,etc.),do not exist in the solid state.$LiHCO_3$ is an alkali meta

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$(i), (ii), (iii), (iv)$

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(A) Most metal bicarbonates,except for those of alkali metals (like $NaHCO_3$,$KH_3$,etc.),do not exist in the solid state.$LiHCO_3$ is an alkali metal bicarbonate,but it is highly unstable in the solid state and exists only in solution.$Ca(HCO_3)_2$,$Zn(HCO_3)_2$,and $AgHCO_3$ are known to exist only in aqueous solutions and decompose upon attempting to isolate them as solids.Therefore,$(i), (ii), (iii),$ and $(iv)$ do not exist in the solid state.

Which metal bicarbonates do not exist in the solid state?
$(i) \, LiHCO_3$
$(ii) \, Ca(HCO_3)_2$
$(iii) \, Zn(HCO_3)_2$
$(iv) \, AgHCO_3$

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Which metal bicarbonates do not exist in the solid state?$(i) \, LiHCO_3$ $(ii) \, Ca(HCO_3)_2$ $(iii) \, Zn(HCO_3)_2$ $(iv) \, AgHCO_3$