Rubidium ignites spontaneously when exposed to oxygen to form rubidium oxide, Rb2O. Rubidium exists as two isotopes: 8537Rb (84.91 u) and 8737Rb (86.91 u). If the average atomic mass of rubidium is 85

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Rubidium ignites spontaneously when laagered to oxygen to mould rubidium oxide, Rb2O. Rubidium exists as two isotopes: 8537Rb (84.91 u) and 8737Rb (86.91 u). If the mediocre atomic body of rubidium is 85.47 u individualize the percentage abundance of 8537Rb ?

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