In what ways does lithium show similarities to magnesium in its chemical behaviour?

(N/A) $i$. Both $Li$ and $Mg$ react slowly with cold water.
$ii$. The oxides of both $Li$ and $Mg$ are much less soluble in water and their hydroxides decompose at high temperature:
$2LiOH \xrightarrow{\Delta} Li_2O + H_2O$
$Mg(OH)_2 \xrightarrow{\Delta} MgO + H_2O$
$iii$. Both $Li$ and $Mg$ react with $N_2$ to form nitrides:
$6Li + N_2 \xrightarrow{\Delta} 2Li_3N$
$3Mg + N_2 \xrightarrow{\Delta} Mg_3N_2$
$iv$. Neither $Li$ nor $Mg$ form peroxides or superoxides.
$v$. The carbonates of both are covalent in nature and decompose on heating:
$Li_2CO_3 \xrightarrow{\Delta} Li_2O + CO_2$
$MgCO_3 \xrightarrow{\Delta} MgO + CO_2$
$vi$. $Li$ and $Mg$ do not form solid bicarbonates.
$vii$. Both $LiCl$ and $MgCl_2$ are soluble in ethanol due to their covalent nature.
$viii$. Both $LiCl$ and $MgCl_2$ are deliquescent and crystallize from aqueous solutions as hydrates,e.g.,$LiCl \cdot 2H_2O$ and $MgCl_2 \cdot 6H_2O$.