The horizontal rows are known as periods.
Its called "Period."
They are called periods.
jfgi (but i think periods)
These horizontal rows are called periods.
The horizontal rows on the periodic table are periods. Groups are the vertical columns on the periodic table.
The horizontal rows on the periodic table are called periods.
The horizontal rows of elements in 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.
These horizontal rows are called periods.
Period
The horizontal rows on the periodic table are called periods.
Yes. The horizontal rows on the periodic table are known as periods.
The horizontal rows on the periodic table are periods. Groups are the vertical columns on the periodic table.
False; That would be called groups. Periods are horiztonal rows.
The rows (Horizontal) are called Periods and the Columms (Vertical) are called Groups.
rows. the vertical columns are called periods
They are the horizontal rows in the periodic table
The horizontal rows on the periodic table are called periods.
The horizontal rows of elements in the periodic table are called periods.