Question

Why are dipole moments of $CO_{2}$, $BF_{3}$, $CCl_{4}$, $PF_{5}$, $SF_{6}$ zero?

Answer 1

hey,,,
the polarity of covalent bond can be convenienty measured in terms of physical quantity called dipole moments.....
above the molecules have dipole momentsZERO ,because dipole of the bond cancel each other.
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