We know that one mole of oxygen gas contains two moles of o atoms (remember that o is a diatomic element in nature and is written o2). if we have a sample of o2 that contains 1. x 10-20 mol, we will have
atoms of o in the sample.

sodium (na), for example, has one electron in its valence shell. this is an unstable state because that valence shell needs eight electrons to be full. in order to fill its valence shell, find a way to add seven electrons to its valence shell

asking the goog might u get an answer

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