ELEMENTS AND COMPOUNDS 



II 



istry, a characteristic system of notation is used. The 

 name of an element, as oxygen, is not written in full, but 

 a symbol or sign, denoting the element is employed. In 

 the case of oxygen, the symbol is O. The symbol of an 

 element is either the first letter of the name of the ele- 

 ment, or the first with some characteristic letter, as Cl 

 for chlorin. In some cases, the symbols are derived 

 from the Latin names of the elements, as Fe (Ferrum) 

 for iron. By use, the student soon becomes familiar with 

 those symbols most commonly used. 



Approximate Va- Kind of 



Name. Symbol, atomic weight, lence. element. 



Aluminum Al 27 3 Base-forming 



Antimony Sb 120.5 3.5 



Arsenic As 75 3,5 



137.5 2 Base-forming 



208 3,5 



11 3 Acid-forming 

 80 i Acid-forming 

 40 2 Base-forming 



12 2, 4 Acid-forming 

 35.5 i Acid-forming 

 52 4,6 



59 2, 4 Base-forming 



64 i, 2 Base-forming 



19 i Acid-forming 



197 3 Base-forming 



i i 



127 i . Acid-forming 



56 2, 3, 4 Base-forming 



207 2, 4 Base-forming 



7 i Base-forming 



24 2 Base-forming 



55 2,4,6 



200 i, 2 Base-forming 



Barium Ba 



Bismuth Bi 



Boron B 



Bromin Br 



Calcium Ca 



Carbon C 



Chlorin Cl 



Chromium ........ Cr 



Cobalt Co 



Copper 



Fluorin 



Gold 



Hydrogen 



lodin .... .... 



Iron 



Lead 



Lithium Li 



Magnesium Mg 



Manganese Mn 



Mercury Hg 



Cu 



F 



Au 



H 



I 



Fe 



Pb 



