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The rows (Horizontal) are called Periods and the Columms (Vertical) are called Groups.
The horizontal rows are called periods
The horizontal rows in the periodic table are called periods
The horizontal rows are periods on periodic table. There are 7 horizontal rows in modern periodic table.
plateau
Earth's polar zones are also called the Earth's Frigid Zones.
It is called a horizontal line!
The horizontal line is called the horizontal axis
It is called the displacement in the horizontal direction.
they are called Horizons.
because it is
The horizontal axis is also called the x-axis.
The horizontal row is called period.
The horizontal rows are called Periods. There are 7 periods.
The horizontal rows on the periodic table are called periods.
The horizontal rows on the periodic table are called periods.
The horizontal rows of elements in the periodic table are called periods.