Grade upto college level Physical Chemistry
The molecule which has zero dipole moment is :a. CH2CI2b. BF3c. NF3d. CIO2
The molecule which has zero dipole moment is :
a. CH2CI2
b. BF3
c. NF3
d. CIO2
3 Answers
Deepak Patra
(b) TIPS/Formulae : Dipole moment of compound having regular geometry and same type of atoms is zero. It is vector quantity.
The zero dipole moment of BF3 is due to its symmetrical (triangular planar) structure. The three fluorine atoms lie at the corners of an equilateral triangle with boron at the centre.
NOTE : The vectorial addition fo the dipole moment of the three bonds gives a net sum of zero because the resultant fo any two dipole moments is equal and opposite to the third. The dipole moment of NH3 is 1.46 D indicating its unsymmetrical structure. The dipole moment of CH2CI2 (the molecule uses sp3 hybridisation but is not symmetric) is 1.57D
MD MANSUR ANSARI
Zero dipole moment is the dipole moment between two atoms being zero. It depends on the polarities of individual bonds and the geometry of the atoms
Kushagra Madhukar
Dear student,
Please find the answer to your question.
The answer is b) BF3
This is due to the symmetrical (triangular planar) structure of BF3. The three fluorine atoms lie at the corners of an equilateral triangle with boron at the centre.
Thanks and regards,
Kushagra
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