erted in retaining the atoms in one group, and the 

 remainder probably determining the quantivalence. 

 Some of the compound radicals are obtainable in 

 the free state, others have yet to be proved capable 

 of isolated existence. 



These radicals unite with bases to form salts, 

 which are called Chlorides, Bromides, Iodides, &c., 

 according to the radical. The chemical formulae 

 and quantivalence of these radicals should be thor- 

 oughly learned, and then when speaking of a salt 

 one will understand that it is the result of the union 

 of a base with a certain radical. 



FORMUL/E AND QUANTIVALENCE OF SOME OF THE 

 ACIDULOUS RADICALS: 



All Chlorides contain Cl ") 



All Bromides contain Br 



All Iodides contain I 3 ^ 



All Cyanides contain CN { 2-. <" 



All Hydrates contain HO ' $ L 



All Nitrates contain NO 3 



All Chlorates contain C1O 3 



All Acetates contain.. .... .C 2 H 3 O 2 



All Oxides contain O 



All Sulphides contain S _, ^ 



All Sulphites contain SO 3 L <' 



All Sulphates contain SO 4 o* L 



All Carbonates contain . . . .CO 3 



All Oxalates contain C 2 6 4 



* All Tartrates contain C 4 H 4 O 6 



All Citrates contain C 6 H 5 O 7 } a < 



All Phosphates contain PO 4 



All .Berates contain. . . . BO Q ST * 



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