Chemistry, asked by khanaqsaadiba, 1 year ago

a monoatomic molecule ( helium or gold)

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Answered by Anonymous

Noble gases. The only chemical elements which are stable single atom molecules at standard temperature and pressure (STP) are the noble gases. These are helium, neon, argon, krypton, xenon and radon. Noble gases have a full outer valence shell making them rather non-reactive species.

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