write the chemical formula of the compounds formed by combining the third member of the alkali metal group with nitrogen, oxygen, fluorine, carbon and chlorine.
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Explanation:
The alkali metals tend to form ionic solids in which the alkali metal has an oxidation number of +1. Therefore, neutral compounds with oxygen can be readily classified according to the nature of the oxygen species involved. Ionic oxygen species include the oxide, O2-, peroxide, O22-, superoxide, O2-, and ozonide O3-. Compounds that can be prepared that contain an alkali metal, M, and oxygen are therefore the monoxide, M2O, peroxide, M2O2, superoxide, MO2, and ozonide, MO3. Rubidium and cesium and, possibly, potassium also form the sesquioxide, M4O6, which contains two peroxide anions and one superoxide anion per formula unit. Lithium forms only the monoxide and the peroxide.
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