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Nitrogen (atomic number 7) and phosphoro...

Nitrogen (atomic number 7) and phosphorous (atomic number 15) belong to group 15 of the periodic table. Write the electron configurations of these two elements. Which of these is more electronegative?

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(i) Nitrogen : K shell-2 L shell-5
Phosphorus : K shell-2 L shell-8 M shell- 5
(ii) Phosphorus will be less electronegative because its electrons are further away from the nucleus and thus electrons can be easily lost.
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