At one time, it was common to write the formula for copper( I) chloride as Cu2Cl2
Chapter 23, Problem 23.111(choose chapter or problem)
At one time, it was common to write the formula for copper( I) chloride as Cu2Cl2, instead of CuCl, analogously to Hg2Cl2 for mercury(I) chloride. Use electron configurations to explain why Hg2Cl2 and CuCl are both correct.
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