groups of mordern preodic table

Asked by  | 31st Mar, 2008, 12:08: PM

Expert Answer:

The modern periodic table consists of 18 vertical columns called groups.Elements in a group have same number of valence electrons. The properties of an atom are determined mainly by no. of valence electrons so the  elements in a group have similar properties. 

Answered by  | 20th Dec, 2017, 05:55: PM