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- Choose the correct pair of formula-name. Cl3O -Chlorine trioxide Cl2O -Chlorine dioxide Cl2O -Dichlorine monoxide Cl2O5 -Chlorine pentoxideThe correct name for NaHCO3 is? A. Sodium hydride monocarbon trioxide B. Sodium carbonate C. Sodium hydrocarbonite D. Sodium bicarbonateUse the symbols d+ and d- to show the direction of the polarity of the bond between carbon and oxygen.H3C - OH