there are 18 columns
There are 18 columns.
18
18
There are 8 A columns on the periodic table. They are the two columns of the s-block and the six columns of the p-block.
There are 18 columns on the periodic table.They are called groups or families.
There are 18 groups in the periodic table of elements.
groups are the vertical columns on the periodic table
The periodic table has 7 rows and 32 columns.
The vertical columns of the periodic table are called groups or families.
The columns on the periodic table are called Groups.
18
There are NO vertical ROWS, because rows run horizontally, and COLUMNS run vertically. There are 18 vertical columns in the periodic table.