There seems to be a typo in your question. If you meant a "horizontal row" (left to right) of the Periodic Table, those are called periods. If you meant a "vertical column" (up and down) of the periodic table, those are called groups.
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.
A horizontal row on the periodic table of elements is called a period.
rows. the vertical columns are called periods
The horizontal rows in the periodic table are called periods
Yes. the horizontal rows on the periodic table are called periods.
The horizontal rows on the periodic table are called periods.
The horizontal rows are periods on periodic table. There are 7 horizontal rows in modern periodic table.
The rows (Horizontal) are called Periods and the Columms (Vertical) are called Groups.
A horizontal row on the periodic table of elements is called a period.
a horizontal row is called a period.a vertical row is called a group
The horizontal rows of elements in the periodic table are called periods.
rows. the vertical columns are called periods
The Horizontal row on the table is called a period
Horizontal rows in Periodic Table are called Periods
The 7 horizontal rows in the periodic table are called periods.
The horizontal rows of the periodic table are called Periods and the vertical rows are called groups.