As a subject matter expert in chemistry, I can tell you that krypton is a noble gas, which means it's one of the elements in Group 18 of the periodic table. Noble gases are known for being very stable and unreactive due to their full valence electron shell. Krypton is a colorless, odorless, and tasteless gas under standard conditions, which makes it difficult to observe in its elemental form. However, when exposed to a high-voltage electric field, krypton can emit a bright white or pale blue light, which is why it's used in certain types of lighting, such as fluorescent lamps and flash lamps.

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Krypton is one of the gases that makes up the earth's atmosphere. ... Krypton is a colorless, odorless gas that rarely reacts with other elements. A container full of krypton gas looks just like a container full of air.read more >>