Which of the following is inert gases?

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Krypton

Argon

Both 1 and 2

None of these

answer is C.

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Detailed Solution

Concept- The elements that make up group 18 of the contemporary periodic table are referred to as noble gases, inert gases, and aerogens. These components are included in this category:
Helium (He)
Neon (Ne)
Argon (Ar)
Krypton (Kr)
Xenon (Xe)
Radon (Rn)
All noble gases are found in the gaseous phase at standard pressure and temperature. They are well known for having very little chemical reactivity (hence the name inert gas). This is due to the fact that the electrical configuration of all noble gases is stable.
The inert gases are those listed in group 8A of the periodic table. Radon, krypton, argon, neon, xenon, and so on.
Therefore, both krypton and argon are inert gases.
Hence, option 3 is correct.

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