Question

why do you think the noble gases are placed in separate groups name any two noble gases ​

Answer 1

Answer:

Noble gases are placed in a separate group because they are highly unreactive and, except Xenon (Xe), don't combine with other elements.

Two examples of noble gases are Helium (He) and Neon (Ne)

Answer 2

Answer:

All the noble gas elements have zero valency and placed in zero group with similar chemical properties. ... The noble gases like helium,neon. argon, krypton and xenon are placed in a separate group because these are inert ( un-reactive ) and present in very low concentration in the atmosphere.