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?

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.

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