Question

group 17 is called halogens family, and the group to the right is called the noble gases. How are these elements alike and how are they different ?

Answer 1

Similarities:
The halogens like noble gases are gaseous im nature. Example,
Chlorine, bromine are halogens and argon , xenon are noble gases.
Both are non-metals.

Differences: Halogens are very reactive because their octet needs only one electron tk complete. But, the nobles gases are quite stable and unreactive because the have complete octets.

Answer 2

They are alike cause they work the same and they are different cause they have different names