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Variation of Electronegativity

Nitrogen atom...

Question

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? [3 MARKS]

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Solution

Each point: 1 Mark

1. Nitrogen (7): 2, 5
2. Phosphorus (15): 2, 8, 5
3. Since, electronegativity decreases with moving from top to bottom in a group, thus Nitrogen will be more electronegative.

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Variation of Electronegativity

Standard X Chemistry

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