Answer_key_chapter_15

Answer_key_chapter_15 - Answer key Chapter 15 *15.3 Note...

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Answer key Chapter 15 * 15.3 Note halide compound is composed of halogen (group 17). Nitrogen trihalides is a compound that N forms covalent bond with 3 halogen atoms and there is one lone pair of electrons on nitrogen, thus the geometry of the compound is trigonal pyramid, e.g. As the molar mass of the halogen increases, the atomic radius of the halogen increases (for example, Cl atom is larger than F atom). Thus, there is more repulsion between electrons in the halogen atoms (and in fact, there is also the repulsion between lone pair electron of nitrogen and electrons of the halogen). Also, nitrogen is such a small atom that cannot accommodate the halogen atom to lessen the repulsion. As a result, this makes the molecule unstable when molar mass of the halogen increases. * 15.11 credit: James E. House, Inorganic Chemistry, pp 487. Although the boiling point is also proportional to molar mass, as you can see from the figure above, the net dipole moment of NF 3 is approximately zero (the dipole moments indicated by the big arrows are
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This note was uploaded on 12/16/2010 for the course CHEM 6C taught by Professor Hoeger during the Fall '08 term at UCSD.

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Answer_key_chapter_15 - Answer key Chapter 15 *15.3 Note...

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