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Define diagonal relationship between the elements.List two similarities in chemical behavior of Li with Mg.

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Define diagonal relationship between the elements.List two similarities in chemical behavior of Li with Mg.

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oxides of lithium and magnesium are less soluble in H2O. also the hydroxides of both decompose at high temperature.

2LiOH→Li2O+H2O 

Mg(OH)2→MgO+H2O

(ii) Nitrides is formed from both the lithium and magnesium when they react with N2.

6Li+N2→2Li3N 

3Mg+N2→Mg3N2

(iii)Neither Li nor Mg form superoxides or peroxides.

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