Which of the following is NOT a noble gas?

Correct option is B

The correct Ans is (b) Nitrogen (N)
Nitrogen (N) is not a noble gas. It is a diatomic gas and belongs to Group 15 of the periodic table. Nitrogen is highly reactive under certain conditions and plays a vital role in forming various compounds, unlike noble gases, which are chemically inert due to their complete outer electron shells. Noble gases, such as Argon, Neon, and Helium, belong to Group 18 and are known for their lack of chemical reactivity.
Information Booster:
· Noble Gases (Group 18): Include Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe), and Radon (Rn).
· Noble gases have a complete valence shell, making them chemically inert.
· Nitrogen (N): Is a Group 15 element and makes up about 78% of Earth's atmosphere by volume.
· Helium (He) is the second-lightest element and is used in balloons and cryogenics.
· Neon (Ne) is commonly used in lighting (neon lights), while Argon (Ar) is used in welding and incandescent light bulbs.