Question

    3.  a)  The following questions refer to the periodic table: (i  Name the first and the last element in period  2. (ii) What happens to the atomic size of elements on moving from top to bottom in a group? (iii) Which of the element has the greatest electron affinity among the halogens? (iv)   What is the common feature has of the electronic configurations of the elements in group 17?

Answer 1

Explanation:

1) lithium and neon

2) atomic size increases

3) chlorine

4) electronic configuration misses octet by one electron