Write the formulas and names of the following:
(a) An ionic compound whose cation is a transition metal with 25 protons and 22 electrons and whose anion is an oxoanion of nitrogen with two oxygen atoms.
(b) A molecule made up of a metalloid in Group 13 and three atoms of a halogen in period 2.
(c) An ionic compound made up of an alkaline earth with 20 protons, and an anion with one hydrogen atom, a carbon atom, and 3 oxygen atoms.
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