General properties of S-block elemental substancs 1.React with H2 to produce ionic compounds M+1H-1. M+2H-12(except for Be,Mg); 2.React with O2 to form oxide (O2),peroxide (O22), superoxide (O2); 3.React with water and non-metallic elements to form the corresponding compounds except for Be and Mg; 4.Dissolve into liquid NH3 to form blue reducing solution except for Be Note:they show different activities 1. React with H2 to produce ionic compounds M+1H-1 、 M+2H-1 2 (except for Be, Mg)； 2. React with O2 to form oxide (O2- ), peroxide (O2 2- ), superoxide (O2 - )； 3. React with water and non-metallic elements to form the corresponding compounds except for Be and Mg; 4. Dissolve into liquid NH3 to form blue reducing solution except for Be General properties of S-block elemental substancs Note: they show different activities