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Structure of the Atom — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceStructure of the Atom2 Marks
Question
Why helium and neon do not take part in chemical reactions?
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Answer

These gases have completely filled outer most orbitals (octet configuration). Hence they are very stable and do not react with other elements and are considered chemically inert and they were discovered late. Hence they are called noble gases.

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