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A binary compound of oxygen and an unknown element, X, has the formula X20 and is 8.559 mass % oxygen. u (a) What is the

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A binary compound of oxygen and an unknown element, X, has the formula X20 and is 8.559 mass % oxygen. u (a) What is the atomic weight of element X? (b) What is the symbol for the element on the periodic table? X = (c) Is the element X a metal or not? (d) Is the compound X20 likely to be ionic or covalent? (e) What is the name of the compound

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