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Write down the electronic configuration of the following elements from the given atomic numbers. Answer the following question with explanation.

7N, 6C, 8O, 5B, 13Al Which is the most electronegative element among these?

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7N, 6C, 8O, 5B, 13Al 

Elements and thier electronic configuration

7N=2,5

 6C=2,4

 8O=2,6 

5B=2,3

 13Al =2,8,3

The most electronegative element is 8O as electronegativity decreases down a group while it increases moving across a period from left to the right .

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