An element X forms both a dichloride (XCl2) and a
Chapter 3, Problem 161(choose chapter or problem)
An element X forms both a dichloride (XCl2) and a tetrachloride (XCl4). Treatment of 10.00 g XCl2 with excess chlorine forms 12.55 g XCl4. Calculate the atomic mass of X, and identify X.
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