Chromium is a transition metal, and oxygen had an oxidation number of -2. use this information to match each compound to its chemical formula.

Explanation:

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Chromium has +2, +3 and +6 as the oxidation states, thus, each chromium oxide turns out into:

Their names are hypochromous oxide or chromium monoxide, chromous oxide or dichromium trioxide and chromic oxide or chromium trioxide.

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the correct answer is b. a strong acid completely dissociates to its ions when dissolved in water. completely dissociates to and ions. a is incorrect because does not fully ionize to and ions and some remain as the compound . c and d are incorrect because, and do not fall into the category of bronsted lowry acids. a bronsted lowry acid is a proton donor and since both molecules do not have a proton to donate they are not bronsted lowry acids. likewise,   if we use the lewis acid definition, they cannot be acids. a lewis acid is an electron pair acceptor. both and have a complete octet so can not accept any electrons which disqualifies them as acids.