Horizontal rows are called groups. Groups are formed according to the atomic number.
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.
rows. the vertical columns are called periods
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.
Horizontal rows on the Periodic Table of Chemical Elements are called periods.
The rows are used to study the change in trends. There are 7 periods in periodic table.
Horizontal rows in Periodic Table are called Periods
The two names for horizontal rows on the periodic table are periods and series.
There are NO vertical ROWS, because rows run horizontally, and COLUMNS run vertically. There are 18 vertical columns in the periodic table.