A horizontal row is called a period .
Periods. Vertical columns are called groups or families.
The rows are called periods
columns
The horizontal rows on the periodic table are called periods.
in the periodic table the rows are called periods and the columns are called groups
The horizontal rows of elements in the periodic table are called periods.
The horizontal rows on the periodic table are called periods.
As with any grid, the periodic table has rows running left to right, and columns running up and down. The rows are called PERIODS and the columns are called GROUPS.
The horizontal rows on the periodic table are called periods.
The rows in the periodic table are called periods. There are 7 periods in periodic table.
rows. the vertical columns are called periods
in the periodic table the rows are called periods and the columns are called groups
Horizontal rows on the Periodic Table of Chemical Elements are called periods.
The horizontal rows are periods on periodic table. There are 7 horizontal rows in modern periodic table.
The horizontal rows on the periodic table are called periods.
The rows on the periodic table are called periods
The rows (Horizontal) are called Periods and the Columms (Vertical) are called Groups.
The horizontal rows of elements in the periodic table are called periods.
Horizontal rows are called groups. Groups are formed according to the atomic number.
each row in the Periodic Table is called a period.