556 SMITH'S INTERMEDIATE CHEMISTRY 



2. If there are two isotopes of chlorine, and six of mercury, 

 how many varieties of mercuric chloride HgCl 2 are possible? 

 In what respects would these varieties be different? In what 

 respects would they be identical? 



3. Draw diagrams showing the electron arrangements in the 

 following molecules: hydrogen fluoride, water, oxygen (0 2 ), 

 carbon dioxide, sodium chloride. 



THE PROPERTY OF 



DEPARTMENT OF 

 CHEMICAL ENGINEERING 



Of 



