Question

why do you think the noble gases are placed in a separate group​

Answer 1

Answer:

Nobel gases are placed in a separate group because they are extremely unreactive & they generally do not combine with other elements of the periodic table except Xe.

Explanation:

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Answer 2

Answer:

Noble gases are placed in the separate group. Because they are extremely unreactive and they are generally not combine with other elements

eg:Helium(He),Neon(Ne)