Question

The figure below shows variation of number of outermost electrons (1) with atomic number of elements in the periodic table

1. Give the values of
   1. a₁
   2. a₃
2. State why elements with a₁ and a₂ outermost electrons do not react with each other. 

Answer 1

1.  
   1. a₁   1
   2. a₃   8 
2.  
   1. Have a tendency to loose electrons.
   2. Both form positive ions.
   3. Both of them are metals.