Assignments

Assignment #2

Discovering Valence States for Ionic Componds

Print this work sheet out for yourself so that you can complete the chart. Hint, set your browser size to large before printing.
Using period 3 of the periodic table, draw Bohr diagrams for these eight elements and assign to each element a family or group number as found on the top of the periodic table, then
Fill in the Chart below

Element	Group Number	# of electrons in the last shell	Nearest Noble gas	# of electrons in Noble gas' last shell	# of electrons, gained or lost, to be ioselectronic with Noble gas	charge and size of charge on ion when this occurs
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Now, answer these questions

What two principles seem to be self evident from this chart?
Define the term valence.
Develope a conclusion to this exercise that enables you to remember a representative element's valence value by using the periodic table. Hint: look at the elements group or family number.