Statement I : Li and Mg both produce nitride with nitrogen on heatingStatement II : Li and Mg both have outer most electron in s - subshell

→ Due to the same polarising power of Li+ & Mg+2 they show diagonal relationshipDue to the diagonal relationship they shows certain similaritesEg: Both Li & Mg reacts with atmospheric nitrogen and produces respective nitrides6Li+N2→2Li3NLithium nitride 3Mg+N2→Mg3N2Magnesium nitride→3Li    1s2 2s1   12Mg  1s2 2s2 2p6 3s2Both Li & Mg have last electron in S-subshell∴ Statement - I & Statement - II are correct