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An Intiative by Sri Chaitanya
a
the valence electrons in F are on the average, a little closer to the nucleus than in N
b
the charge on F nucleus is +9, while that on N nucleus is +7
c
the valence electrons in F and N are in different shells and thus, their energy are greatly different
d
electronegativity increases from Ieft to right in each of the period
answer is A.
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