Group.
The horizontal row on the periodic table is called the "period". The vertical column is called the "group".
A vertical column is called a 'group.' A horizontal row is called a 'period,' thus the periodic table.
A row on the periodic table is a horizontal arrangement of elements that share similar properties. These elements have the same number of electron shells. Each row represents one energy level or electron shell in an atom.
The Horizontal Rows are named 'PERIODS'. The Vertical Columns are named 'GROUPS'.
A horizontal row in the periodic table is called a period. There are seven periods in the periodic table, labeled from 1 to 7. Each period represents the energy levels of the elements within that row.
Groups, or Families.
The vertical "rows" are called Columns, and the horizontal "rows" are called Periods
Horizontal rows are called Periods, while vertical columns are called Groups.
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.
A row in the Periodic Table is called a period. Columns are groups.
A PERIOD. NB A columns down the table is a GROUP.