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Structure of the Atom — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceStructure of the Atom2 Marks
Question
What are inert elements? Why are they called so?
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Answer

The noble gases are in Group $18 (8A)$. They are helium, neon, argon, krypton, xenon, and radon. They were once called inert gases because they were thought to be completely inert - unable to form compounds.

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