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Electronegativity Trends
- Arrange a group of elements in order of increasing electronegativity
using the periodic table only. [If the concept of polarity has already been introduced,
students could use predicted electronegativity values to rank the polarity of chemical
bonds.]
- Arrange the following elements in order of increasing electronegativity using
the periodic table: phosphorus, sodium, chlorine, aluminum. Explain your reasoning.
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Using a periodic table, decide which of the following chemical bonds you would expect to be
the most polar? The least polar? C-N, C-O, or C-F? Explain why.
- Identify pairs of elements that have the greatest differences in
electronegativity or the least differences. For example, which of the following pairs
of elements have the greatest differences in electronegativity values?
a) Na and Cl b) Na and F c) Na and I
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Activities List 
