Write the chemical formula for each of the following

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45. Write the chemical formula for each of the following compounds. List the symbols for the elements in the order that the elements are mentioned in the description. a. a compound with molecules that consist of two phosphorus atoms and five oxygen atoms. b. a compound with molecules that consist of two hydrogen atoms and one sulfur atom. c. a compound that contains three calcium atoms for every two nitrogen atoms. d. a compound with molecules that consist of 12 carbon atoms, 22 hydrogen atoms, and 11 oxygen atoms. Section 3.2 Chemical Compounds and Chemical Bonds 46. Hydrogen bromide, HBr, is used to make pharmaceuticals that require bromine in their structure. Each hydrogen bromide molecule has one hydrogen atom bonded to one bromine atom by a polar covalent bond. The bromine atom attracts electrons more than does the hydrogen atom. Draw a rough sketch of the electron‑cloud that represents the electrons involved in the bond. Chapter Problems O BJECTIVE 4 O BJECTIVE 3 O BJECTIVE 4 O BJECTIVE 3 O BJECTIVE 5 116 Chapter 3 Chemical Compounds
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Chapter Problems 117 47. Iodine monochloride, ICl, is a compound used to make carbon‑based (organic) compounds that contain iodine and chlorine. It consists of diatomic molecules with one iodine atom bonded to one chlorine atom by a polar covalent bond. The chlorine atom attracts electrons more than does the iodine atom. Draw a rough sketch of the electron‑cloud that represents the electrons involved in the bond. 48. Atoms of potassium and fluorine form ions and ionic bonds in a very similar way to atoms of sodium and chlorine. Each atom of one of these elements loses one electron, and each atom of the other element gains one electron. Describe the process that leads to the formation of the ionic bond between potassium and fluorine atoms in potassium fluoride. Your answer should include mention of the charges that form on the atoms. 49. Atoms of magnesium and oxygen form ions and ionic bonds in a similar way to atoms of sodium and chlorine. The difference is that instead of having each atom gain or lose one electron, each atom of one of these elements loses two electrons, and each atom of the other element gains two electrons. Describe the process that leads to the formation of the ionic bond between magnesium and oxygen atoms in magnesium oxide. Your answer should include mention of the charges that form on the atoms. 50. Explain how a nonpolar covalent bond, a polar covalent bond, and an ionic bond differ. Your description should include rough sketches of the electron‑ clouds that represent the electrons involved in the formation of each bond. 51. Write a chemical formula that represents both a molecule and a compound. Write a formula that represents a compound but not a molecule.
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  • Fall '06
  • Mark
  • Atom, atoms, Chemical bond

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