The rows of the periodic table are known as periods.
The rows in the periodic table are called periods. There are 7 periods in periodic table.
Periods have same shells. There are 7 periods in periodic table.
The Periods are the horizontal rows on the periodic table.
The periodic table has 7 periods on it.
rows. the vertical columns are called periods
Periods in periodic table refers to rows.Each row element has its specific characteristics.There are 7 rows in a periodic table.
The horizontal rows on the periodic table are periods.
The modern periodic table has seven periods.
Periods are placed horizontally in the periodic table of Mendeleev.
The horizontal rows on the periodic table are periods. Groups are the vertical columns on the periodic table.
there are 7 periods in the periodic table118