Question Video: Recalling How the Columns and Rows in the Periodic Table Are Named Science • Second Year of Preparatory School

Video Transcript

Fill in the blanks. The rows of the periodic table are called blank, while the columns of the periodic table are called blank.

The periodic table lists elements in order of increasing atomic number, which is equivalent to the number of protons. The elements are organized into columns. Elements in the same column tend to have similar reactivity and the same number of outer-shell electrons. The columns of the periodic table are called groups. The periodic table is also split into rows. Elements in the same row have the same number of electron shells. The rows are known as periods.

Therefore, the rows of the periodic table are called periods, while the columns of the periodic table are called groups.