Answer:
Families; noble gases
Step-by-step explanation:
Groups in periodic table are vertical columns and periods are horizontal rows.
In periodic table, there are 18 groups and 7 periods.
Group 17 is called halogen family , group 18 called noble gas family, group 16 is called oxygen family etc.
Therefore, Groups are also called families.
The last group in periodic table is 18. The last group is the family of noble gases.
Therefore,groups on the periodic table are also called families, and the far right group of the table is the noble gases.
Answer:Families; noble gases