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The geometry of H2 S and its dipole mom...

The geometry of ` H_2 S` and its dipole moment are :

A

angular and non-zero

B

angular and zero

C

linear and non-zero

D

linear and zero.

Text Solution

Verified by Experts

The correct Answer is:
A

`mu = 0.90 D`
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The geometry of H_2S and its dipole moment are:

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Polar covalent molecules exhibit dipole moment. Dipole moment is equal to the product of charge separation, q and the bond length d for the bond. Unit of dipole moment is Debye. One Debye is equal to 10^(-18) esu-cm. Dipole moment is a vector quantity. It has both magnitude and direction. Hence, dipole moment of a molecule depends upon the relative orientation of the bond dipoles, but not on the polarity of bonds alone. A symmetrical structure shows zero dipole moment. Thus, dipole moment helps to predict the geometry of a molecules. Dipole moment values can be used to disinguisd between cis- and trans- isomers, ortho-, meta - and para - forms of a substance, etc. The dipole moment value of H-X molecule is 1.2 Debye. If the internuclear distance between H-X is 0.8Å then the % ionic character in H-X molecules is :

Polar covalent molecules exhibit dipole moment. Dipole moment is equal to the product of charge separation , q and the bond length d for the bond. Unit of dipole moment is debye. One debye is equal to 10^(-18) esu cm. Dipole moments is a vector quantity. It has both magnitude and direction. Hence, dipole moment of a molecule depends upon the relative orientation of the bond dipoles, but not on the polarity of bonds alone. A symmetrical structure shows zero dipole moment. Thus, dipole moment helps to predict the geometry of a molecules. Dipole moment values can be distinguish between cis- and trans- isomers, ortho, meta and pare-forms of a substance, etc. Q. A diatomic molecule has a dipole moment of 1.2D. If the bond length is 1.0times10^(-8) cm, what fraction of charge does exist each atom?

Polar covalent molecules exhibit dipole moment. Dipole moment is equal to the product of charge separation , q and the bond length d for the bond. Unit of dipole moment is debye. One debye is equal to 10^(-18) esu cm. Dipole moments is a vector quantity. It has both magnitude and direction. Hence, dipole moment of a molecule depends upon the relative orientation of the bond dipoles, but not on the polarity of bonds alone. A symmetrical structure shows zero dipole moment. Thus, dipole moment helps to predict the geometry of a molecules. Dipole moment values can be distinguish between cis- and trans- isomers, ortho, meta and pare-forms of a substance, etc. Q. Arrange the following compounds in increasing order of dipole moments, toluene (I), o-dichlorobenzene (II), m-dichlorobenzene (III) and p-dichlorobenzene (IV) :

An electric dipole has the magnitude of its charge as q and its dipole moment is p . It is placed in a uniform electric field E . If its dipole moment is along the direction of the field, the force on it and its potential energy are respectively

Chemical bonding between two atoms is necessarily associated with an electrical moment arising out of the difference in electroegativity of two atoms. This means that every bond carries with it an electrical moment called the ''bond moment''. The dipole moment of a molecule is really the vectorial sum of the individual bond moment present in it. To compute the dipole moment it is necessary to find out the values of various bond moment. In the following table, dipole moment of different bonds are as given. {:(,rarr,rarr,rarr),("Bond",H-C,C-Cl,C=0),("Bond moments",0.4 D,1.5 D,2.5 D):} The group moments of few groups as given {:("Group",NO_(2),OH,CN,CH_(3)),("Direction of dipole","Towards N","Towards O","Towards N","Away from "CH_(3)),("Dipole moment",4D,1.6D,3.8D,0.4D):} The bond angle in H_(2)S is 97^(@) and its dipole moment is 1.5 D. The S-H bond distance is 0.15 nm. Therefore, approximate percentrage ionic cjaracter pf S-H bond is (neglect the effect of dipole moment of lone pair on sulphur atom in H_(2)S ). (Given : [cos 97^(@)=-0.121 and sqrt(0.88)=0.94] )

DINESH PUBLICATION-CHEMICAL BONDING AND MOLECULAR STRUCTURE -JEE (JOINT ENTRANGE EXAMINATION) ADVANCED COMPREHENSION LINKED MCQs
  1. Which one among the following does not have the hydrogen bond?

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  2. The bond between two identical non-metal atoms has a pair of electrons...

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  3. Hybridisationof sulphur in So(2) is :

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  4. The melecule that has linear structure is:

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  5. The type of hybrid orbitals used by the chlorine atom in CIO(2^(-)) is

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  6. The maximum possible number of hydrogen bonds a water molecule can for...

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  7. The number and type of bonds between two carbon atoms in CaC(2) are:

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  8. The cyanide ion CN and N(2) are isoelectronic, but in contrast to CN^(...

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  9. The geometry of H2 S and its dipole moment are :

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  10. The hybridization of atomic orbitals of nitrogen is NO(2)^(+), NO(3)^(...

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  11. The common features among the species CN^- , CO and NO^+ are :

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  12. Identify the least stable among the following

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  13. Which of the following are iso-electronic as well as is structural ? ...

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  14. According to MO theory,

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  15. The bond angle in H(2)S "is" 92^(@). It suggest that :

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  16. The species having bond order different from that in CO is

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  17. The bond energy (in kcal mol^(-1)) of a C -c single bond is approximat...

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  18. In allene (C(3)H(4)), the type (s) of the carbon atom (s) is (are) :

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  19. The shapes of XeO(2)F(2) molecule is

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  20. Assuming 2s-2p mixing is NOT operative, the paramagnetic species among...

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