The vertical columns.
yes, families and groups the same meaning in the periodic table.
The vertical columns are groups or families. There are 18 such families.
7
21
Groups, or Families.
The periodic table organizes the elements so that they are easy to find and it also puts them into groups or "families" of elements with similar traits.
Radioactive elements exist in all groups of the periodic table.
A Periodic table The Periodic Table of the Elements.
atomic number
There are 18 families. They are made according to the properties of elements. So the elements in a group has similar properties.
There are 18 families. They are made according to the properties of elements. So the elements in a group has similar properties.
To understand and group all the elements.