Structure, bonding and the periodic law / 
prepared by an Open University course team. 
 - 2nd ed. 
 - Bletchley :  The Open University,  1973. 
 - v. :  ill. ;  30 cm. 
<br/><br/>Unit 9. Elements of the lithium row; orbitals pt.2 - unit 10. Non-metals and semi-metals - unit 11. The halogens and the noble gases. 
<br/><br/><label>ISBN: </label>033502260X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Metals.<br/>Gases.