Rows are known as periods. They exist as horizontal lines. The bottom two rows are lanthanides and actinides.
These rows are named periods.
Horizontal rows in Periodic Table are called Periods
The rows in the periodic table are called periods. There are 7 periods in periodic table.
There are 7 periods in the modern periodic table.
The rows (Horizontal) are called Periods and the Columms (Vertical) are called Groups.
rows. the vertical columns are called periods
The Horizontal Rows are named 'PERIODS'. The Vertical Columns are named 'GROUPS'.
They are the horizontal rows in the periodic table
The periodic table has 7 rows and 32 columns.
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 are used to study the change in trends. There are 7 periods in periodic table.