Which of the following molecules is polar and possesses zero dipole mo

1.	Which of the following molecules is polar and possesses zero dipole moment ?
Answer» `Cl_(2)` `BF_(3)` `NH_(3)` HCl Solution :`BF_(3)` The shape is triangular planar , F - B - B = `120^(@), MU =0` D In `BF_(3)` molecule, there are three polar B - F bo nds PRESENT because the electronegativity of F(4 .0) is more then B(2.0) but hybridization of B in `BF_(3) ` is `sp^(2) ` so the shape is triangular planer. B - F bond is planar but it has regular shape . All vector component each other so it is NON polar.

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