Question

define nobel gas for class 8​

Answer 1

Answer:

These elements are helium, neon, argon, krypton, xenon and radon. They are known as noble gases or inert gases because they are unreactive. If we look at the electronic configuration of noble gases, we would notice that except helium, all other inert gases have 8 electrons in their outermost shells.

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Answer 2

Answer:

The noble gases make up a class of chemical elements with similar properties; under standard conditions, they are all odorless, colorless, monatomic gases with very low chemical reactivity. The six naturally occurring noble gases are helium, neon, argon, krypton, xenon, and the radioactive radon

Explanation:

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