We’re being asked to determine the element with the highest electronegativity.
Recall that the most electronegative element is fluorine (F) while the least electronegative element is francium (Fr).
This means the trend for electronegativity is as follows: it increases from left to right and decreases down a period in the periodic table.
The given elements are:
Al , B, C, N
Which set of elements is arranged in order of increasing electronegativity?
a) Al < B < C < N
b) C < N < B < Al
c) B < N < Al < C
d) N < C < B < Al
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