PeriodicPropertiesElements - PERIODIC PROPERTIES OF...

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PERIODIC PROPERTIES OF ELEMENTS Purpose: Examine and analyze a set of numerical property data for periodicity and organize the elements in groups and periods for the listed elements by the following sorting methods: I. Properties of the Chemical Elements A. Single Sort Sort the first 19 elements listed on the table in the last page using atomic numbers as code numbers, into groups based on one particular column of physical properties – such as atomic mass, atomic size, boiling points, etc. You decide which category to use as the best property for the sorting analysis. Report the following results: ± Sorted by:_________________________________ ± Why did you select the above category for sorting? ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ± Breaks (periodicity) observed at: a. __________________________________ b. __________________________________ c. __________________________________ d. __________________________________ B. Sort by Atom Ratios of H:X (first column data are filled as an example) Atom Ratios H:X 0:1 1:1 2:1 3:1 4:1 2 10 18
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A. Subsorts: Each of the five sort groups above can be subsorted based on another physical property into at least two subgroups. For example, those elements with an H:X atom ratio of 1:1 can be subsorted into two subgroups based on their boiling points. When these elements are listed in order of increasing boiling points it becomes obvious that there is a natural break between the group of elements 1, 9, and 17 and the group, 3, 11, and 19. The second group has boiling points which are more than 800 K higher than the first group! In the space below, subsort those elements with an H:X atom ratio of 1:1 based on Ionization energies . Use as many or as few groups you need. Justify the breaks you have made. I
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This note was uploaded on 12/12/2011 for the course CHM 2041 taught by Professor Staff during the Fall '09 term at Santa Fe College.

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PeriodicPropertiesElements - PERIODIC PROPERTIES OF...

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