1.

Why nf3 is polar and bf3 is non polar

Answer»

non planer and also trigonal planer shape and is symmetrical with all respects. And no contain free unpaired electron because florien is very electro negative   DIPOLE moment is 0.In NF3 PYRAMID type STRUCTURE and  florien is very electro negative so its RESULTANT dipole is downward and dipole is not 0



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