18
7 periods and 18 groups are there on the modern periodic table.
There are 18 groups in the modern periodic table. The groups are also referred as families.
7 periods and 18 groups are there on the modern periodic table.
There are 18 groups and 7 periods in the modern periodic table.
9
Groups of the Periodic Table are defined as vertical colums. There are 18 groups in the periodic table.
The Periodic Table has 18 groups and 7 periods.
Modern periodic table has 7 periods and 18 groups.
There are a total of 18 groups on The Periodic Table of Elements.
There are 18 groups in the periodic table of elements.
4 (including man-made metals)
There are 18 groups on the periodic table.