What is similar between elements in the same vertical column?

1 Answer
Jan 11, 2017

The valance electron formation.


elements in the same vertical column also called families or groups have the same number and arrangements of valance electrons.

Group VII A for an example

Fluorine in the second period has seven electrons and a normal charge of -1

Chlorine in the third period has seven electrons has a normal charge of -1 but can also be +1, +3. +5 and +7

This pattern continues for the rest of this vertical family.