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The geometry of H(2)S and its dipole mom...

The geometry of `H_(2)S` and its dipole moment are :

A

angular & non zero

B

angular & zero

C

linear & non zero

D

linear & zero

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The correct Answer is:
A
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The geometry of H_2S and its dipole moment are:

The geometry of H_2 S and its moment are :

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) :

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] )

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

The molecule (s) that will have dipole moment is/are:

MOTION-CHEMICAL BONDING -EXERCISE -3
  1. The geometry and the type of hybrid orbitals present about the central...

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  2. The hybridisation of atomic orbitals of nitrogen in NO2^+ , NO3^- and...

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  3. The correct order of hybridisation of the central atom in the oflliwng...

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  4. The correct order of increasig C-O bond length of CO, CO(3)^(2-), CO(2...

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  5. In the dichromate anion

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  6. The geometry of H(2)S and its dipole moment are :

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  7. In compounds of type ECI(3), where E=BP, As or B, the angles CI-E-CI f...

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  8. The most likely representation of resonance structure of p-nitrophenox...

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  9. The common features among the species CN^-, CO and NO^+

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  10. Amongst H2O, H2S, H2 Se and H2 Te, the one with the highest boiling po...

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  11. Arrange the following species in decreasing order of bond angle. NO2...

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  12. Find out the bond order of : (a) H2 (b) H2^(+) (c) He2 (d) Li2 (e) ...

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  13. Why does He2^+ exist whereas He2 does not ?

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  14. The bond length in O2^+, O2, O2^- and O2^(2-) follows the order :

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  15. Write the electronic structures of : (a) CO , (b) NO, (c) HF ,(d) HCl,...

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  16. Of the following species which has the shortest bond length NO, NO^+ ,...

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  17. Based upon M.O. theory, state reason for the paramagnetic character of...

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  18. In the hydrides of group 16th elements the bond angles decrease in the...

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