http://en.wikipedia.org/wiki/Periodic_table
groups or families are vertical
A period is a horizontal row in the Periodic Table. Although groups are the most common way of classifying elements, there are some regions of the periodic table where the horizontal trends and similarities in properties are more significant than vertical group trends.
The columns on the periodic table are called GROUPS. The rows are called periods.
Groups
Columns in the periodic table are called "groups" and there are 18 groups in the periodic table.
On the periodic table columns are called groups
COLUMNS columns
These columns are called groups.
The vertical columns on the periodic table are called groups or families.
Columns in the periodic table are called "groups" and there are 18 groups in the periodic table.
groups
The vertical columns of the periodic table are called groups or families.
The columns on the periodic table are called Groups.
groups are the vertical columns on the periodic table
The vertical columns are called "Groups''The horizontal columns are called "Periods"The vertical columns of the periodic table are known as groups.
On the periodic table columns are called groups
COLUMNS columns
The vertical columns in a periodic table are called Groups.
The columns are known as groups.
There are 18 columns on the periodic table.They are called groups or families.
The vertical columns are called groups in a periodic table.