Question

on the basis of electronic configuration how will you select
(1) the terminating member in a period
(2) the chemically similar elements​

Answer 1

Explanation:

1. it depends upon the block you have selected

for e.g. starting from d block it starts with period 4 it starts with scandium (sc) and ends with zinc (zn) and as it has lot of exception in it so few may not follow this rule

2. mostly all elements in a same group have similar chemical property but with few exceptions for e. g. take group 17 fluorine (F) show Anamolous behaviour which is physically and chemically different and it happens with all group in p block elements