Sample Problem 2.11
Determining Names and Formulas of Binary Covalent Compounds
(a) What is the formula of carbon disulfide?
(c) Give the name and formula of the compound whose molecules consist of two N atoms and four O atoms.
(b) What is the name of PCl5?
(a) Carbon is C, sulfide is sulfur S and “di” means 2 - CS2.
(b) P is phosphorous, Cl is chloride, the prefix for 5 is penta - phosphorous pentachloride.
(c) N is nitrogen and is in a lower group number than O (oxygen). Therefore the formula is N2O4 - dinitrogen tetraoxide.
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