Describe the properties of noble gases. based on their electronic arrangement, explain whether they can exist alone in nature.

Hi~~

Noble gases are the elements found in Group 18 (XVIII), and are known to be STABLE, because they follow something called the octet rule or noble gas configuration (8 outermost electrons).

These elements are non-reactive, gases at room temperature, colorless, and odorless.

And based on your question, since they have 8 outermost electrons they are fully stable and exist alone in nature. Helium, neon, argon, krypton, xenon, and radon, all exist in nature as monoatomic gases, and will not react unless there are extreme conditions!

Source: myself (what I learned from chem.)

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c. 75.7

i think that is the right