Columns (the lines like this : l ) are called groups and..
Rows (the lines like this : - ) are called periods
periods
Periods.
rows
rows
A horizontal row on the periodic table of elements is called a period.
The horizontal rows are periods on periodic table. There are 7 horizontal rows in modern periodic table.
rows
each row in the Periodic Table is called a period.
periodsThere are seven periods, or rows, on the periodic table.
The horizontal rows of elements in the periodic table are called periods.
A period is a row of elements on the periodic table.
A horizontal row on the periodic table of elements is called a period.
Horizontal rows in Periodic Table are called Periods
The horizontal rows are periods on periodic table. There are 7 horizontal rows in modern periodic table.
rows
Horizontal rows are called periods. There are 7 periods in periodic table.
Horizontal rows on the Periodic Table of Chemical Elements are called periods.
each row in the Periodic Table is called a period.
periodsThere are seven periods, or rows, on the periodic table.
Yes!The elements are arranged in horizontal rows and vertical columns to represent what is called the periods on the periodic table.
The rows on the periodic table are called periods.