Question

19. Define Dipole moment.
(a) Why dipole moment of BeF, is zero.
(b) Why dipole moment of BF, is zero.​

Answer 1

Answer:

19 )the mathematical product of the separation of the ends of a dipole and the magnitude of the charges. is caleed diploe movement

a)  BeF2 is a non-polar molecule and its dipole moment is zero. This is because the two equal bond dipoles point in opposite directions and cancel the effect of each other. The hybridization in BeF2 is sp, thus it is linear in shape. ... Thus the net dipole moment is 0.

b)Boron trifluoride is has zero dipole moment although it has three polar B—F bonds. This is because BF3 has sp2 hybridisation and regular trigonal planal geometry. And hence the individual dipole moments of polar bonds get cancelled and overall dipole moment is zero

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