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The atomic number of Nitrogen (N), Oxygen (O) and flourine (F) are 7, 8 & 9 respectively.1. What is the number of valence electrons in N & F?2. Name the element having smallest and largest atomic radii of any of the above three elements. Give reason for your answer. |
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Answer» (i) Valence electron of N = 5 Valence electron of F = 7 (ii) Smallest radius = F Largest radius = N Reason: Atomic radius decreases from left to right across a period due to increase in the force of attraction between nucleus and valence electrons. |
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