InterviewSolution
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InterviewSolution
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`BF_(3) and NF_(3)` both molecules, are covalent, but `BF_(3)` is non - polar and `NF_(3)` is polar.Its reason isA. boron is a metal and nitrogen is a gas in uncombined stateB. `BF_(3)` bonds have no dipole moment whereas `NF_(3)` bond have dipole momentC. atomic size of boron is smaller than that of nitrogenD. `BF_(3)` is symmetrical molecule whereas `NF_(3)` is unsymmetrical |
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Answer» Correct Answer - D `BF_(3)` is symmetrical planar , although it has polar bonds but resultant dipole moment is zero . In `NF_(3)` , Ione pair cause distortion , hence polarity arises . |
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