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H(2)O has a net dipole moment while BeF(...

`H_(2)O` has a net dipole moment while `BeF_(2)` has zero dipole moment because :

A

`F` is more electronegativity than oxygen

B

`Be` is more electronegativity than oxygen

C

`H_(2)O` molecule is linear and `BeF_(2)` is bent

D

`BeF_(2)` molecule is linear and `H_(2)O` is bent

Text Solution

Verified by Experts

The correct Answer is:
D
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H_2O has net dipole moment while BeF_2 has zero dipole moment because

A polar covalent bond with positive and negative charge centres at its ends is called a dipole. The polarity of a dipole is measured by its dipole moment. Mathematically it is expressed as dipole moment, mu=q xx d where q and d are the net charge and the distance between the two charges respectively. Dipole moment is a vector quantity. The net dipole moment of a polyatomic molecule is the resultant of the various bond moments present in the molecule. The values of dipole moment are expressed in Debye (D) or in SI units in terms of coulomb- metre (Cm). One of the most important applications of dipole moment is in the determination of geometry and shape of molecules besides prediction of a number of properties of the molecules. NH_3 has a net dipole moment, while BF_3 has zero dipole moment because

A polar covalent bond with positive and negative charge centres at its ends is called a dipole. The polarity of a dipole is measured by its dipole moment. Mathematically it is expressed as dipole moment, mu=q xx d where q and d are the net charge and the distance between the two charges respectively. Dipole moment is a vector quantity. The net dipole moment of a polyatomic molecule is the resultant of the various bond moments present in the molecule. The values of dipole moment are expressed in Debye (D) or in SI units in terms of coulomb- metre (Cm). One of the most important applications of dipole moment is in the determination of geometry and shape of molecules besides prediction of a number of properties of the molecules. H_2O has a dipole moment while BeF, has zero dipole moment because

Which molecules has zero dipole moment ?

Experiment shows that H_(2)O has a dipole moment while CO_(2) has not . Point out the structure which best illustrate these facts