Sorry if you picked a. The
chlorine is one atom away from fluorine. The
boron is four atoms away from fluorine. The fact
that chlorine is less elecronegatie than
fluorine makes the B-Cl bond less polar than the
B-F bond. and boron are both Cl and B Great if you
picked b. The fluorine and boron have the
biggest difference in EN so they would have the
most polar bond. Sorry if you picked
c. Carbon and iodine are two and
three atoms away from fluorine. They have
similar electronegativity,EN, values. Actually
carbon has EN = 2.5 and Iodine has EN = 2.5. the
values are identical.
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