Final answer:
A vertical column within the periodic table is known as a Group. Each group contains elements with similar properties.
Step-by-step explanation:
A vertical column within the periodic table is known as a Group.
The periodic table is divided into 18 vertical columns called groups or families.
Each group contains elements with similar properties as they have the same number of valence electrons.
For example, Group 1 elements are known as alkali metals and Group 17 elements are known as halogens