The 7 horizontal rows in the Periodic Table are called periods.
groupsi
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 row on the periodic table is called a period.
The horizontal rows of the periodic table are called Periods and the vertical rows are called groups.
period
each row in the Periodic Table is called a period.
The horizontal row on the periodic table is called the "period". The vertical column is called the "group".
The first three periods of the periodic table are called the first period, second period, and third period.
a column or family on the Periodic Table
A row of elements across the periodic table is called a period. Periods represent the number of electron shells in an atom.