In this part of the Periodic Table, what type of elements are in the group that includes elements He, Ne, and Ar? 
Definitions:
Alzheimer's Disease
A progressive neurodegenerative disorder that causes memory loss, impaired cognitive function, and changes in behavior.
Heredity
The passing of physical or mental characteristics genetically from one generation to another.
Mutations
Changes in the DNA sequence of an organism's genome, which can lead to variations in physical traits or affect how biological processes work.
Identical Twins
Siblings who develop from the same fertilized egg, resulting in genetically identical individuals.
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