Tutorial 2 FORMULAS, PERCENTAGE COMPOSITION, AND …
The presence of a metal in a chemical formula indicates an ionic compound, which is composed of positive ions (cations) and negative ions (anions). ... 2– dichromate H– hydride Cr3+ chromium(III)2 O2 ... 5There is also a nickel(III) Hg 2 2+ mercury(II) T-8
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