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Nitrogen (atomic number 7) and phosphoru...

Nitrogen (atomic number 7) and phosphorus (atomic number 15) belong to group 15 of the Periodic Table. Write the electronic configuration of these two elements. Which of these will be more electronegative? Why?

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The electronic configurations of the two elements are :
Nitrogen (Z = 7) 2, 5 , Phosphorus (Z = 15) 2, 8, 5 Since the size of nitrogen is small as compared to phosphorus, it has a greater tendency to take up electrons. It is therefore, more electronegative than phosphorus.
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