:

?. .: : ( )2s13s14s15s16s17s1

2. ?2K+2H2O=2KOH+H22Na+2H2O=2NaOH+H22Li+2H2O=2LiOH+H22Rb+2H2O=2RbOH+H22Cs+2H2O=2CsOH+H2

3. ?

4. .Cs

5. ?Li2O+2HCl=2LiCl+H2OLi2O+H2SO4=Li2SO4+H2OK2O+2HCl=2KCl+H2OK2O+H2SO4=K2SO4+H2O

6. .

7. , , ?

, Na

Rb

Li

Ca

NaRbNaLiCsa, H2O, Cl2N2, H2, H2OCO2, H2, CNaOH, O2, S

:

.

BeMgCaSrBaRa9244088137[226]2s23s24s25s26s27s2)))))))))))))))))))))))))))r - () BeO, Be(OH)2 MgO, Mg(OH)2 CaO, Ca(OH)2 SrO, Sr(OH)2 BaO, Ba(OH)2 II+2

I1022,9896,9391Li3Be49,0122 . - beryllos; . , 1798 .; 9; 1,5 ( ); - ; . , 1808 .; 24g (78,6%), 25 Mg (10,11%), 26Mg (11,29%); 1,2 ( ); . alcis ; . , 1808 .; 40 (96,94%), 42 (0,667%), 43 (0,135%), 44 (2,09%) .; 1,0 ( ); . Strontian - ; . , 1790 .; 84Sr (0,56), 86Sr (9,86), 87Sr (7,02), 88Sr (82,56); 1,0 ( ); . Barys ; . , . , 1774 .; 138 (82,56%), 137, 136 .; 0,9 ( ); . radius ; . , . , . , 1898 .; , 226Ra (1/2 1600 ); 0,97 ( ); II

1. O22M+O2=2MO ()2. Hal2M+Cl2=MCl2 ()3. SM+S=MS () 4. N23M+N2=M3N2 () 5. H2M+H2=MH2 ()

1. H2OM+2H2O=M(OH)2 + H2 ! Be+H2O= !!Mg+H2O=MgO + H2

2. HClM+HCl=MCl2 + H2 3. (=Mo, Nb, W, Ti, C, Si)M+=M +

Be +2NaOH=Na2BeO2+H2

, :I II III

? Ba BaO Ba(OH)2 BaCO3

+ 2 2()2H2Ca + SiO2 CaOCaSiO3SiH4SiCa + CO2 COCaOCaCO3CCa + HCl CaH2CaCl2Ca(OH)2H2Ca + N2 CaNCa3N2CaN2Ca + H2 CaHCa2HCaH2++++

, . NaOHO2N2H2OZnK2SO4SH2Na2OBr2

2 : ) ; ) ; ) ; ) ; ? ) ; ) ; ) ; ) Mg; ) Sr; 2 : ) ; ) g; ) ; ) ; ) Sr; 2 ? ) Sr; ) ; ) g; ) ; ) ; 2 ? ) ; ) ; ) ; ) , ;

.* . , .*