They are called families because the elements in a group have similar properties.
groups
groups are the vertical columns on the periodic table
The vertical columns in a periodic table are called groups, and the horizontal rows are called periods.
group or family
These groups are called Transition elements. They are present in the middle of periodic table.
The vertical columns in a periodic table are called Groups.
The vertical sections of the periodic table are called groups or columns.
A row in the periodic table is called a period. Columns are groups.
The vertical columns of the periodic table are called groups or families.
A row in the Periodic Table is called a period. Columns are groups.
A row in the Periodic Table is called a period. Columns are groups.
The columns on the periodic table are called Groups.