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Chemical Bondin...

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  • Question 1
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    Which of the following molecules does not have a dipole moment?

  • Question 2
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    Which of the following combination of orbitals does not form any type of covalent bond (if z-axis is molecular axis)?

  • Question 3
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    $$Cl - Cl$$ distance in structure $$(A)$$ is:

  • Question 4
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    Which plot best represents the potential energy $$(E)$$ of two hydrogen atoms as they approach one another to form a hydrogen molecule?

  • Question 5
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    Directions For Questions

    A paper published in the research journal Science in 2007 (S. Vallina and K. Simo, Science, 305, 506 Jan 26, 2007) reported studies of dimethyl sulphide (DMS, an important green house gas that is released by marine phytoplankton. This gas represents the largest natural source of atmospheric sulphur and a major precursor of hygroscopic (i.e., cloud forming) particles in the clean air over the remote oceans, thereby acting to reduce the amount of solar radiation that crosses the atmosphere and is absorbed by the ocean.

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    Steric number of sulphur is DMS is:

  • Question 6
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    Correct order of dipole moment is:

  • Question 7
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    Directions For Questions

    The space model which is obtained by joining the points representing various bonded atoms gives the shape of the molecule. The geometry of the molecule is definite relative arrangement of the bonded atoms in a molecule. The shape and geometry of a molecule is explained by valence shell electron pair repulsion theory given by Gillespie and Nyholm.

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    Select the correct code for the following repulsion orders, according to VSEPR theory
    (I) lone pair-lone pair $$>$$ lone pair-bond pair
    (II) lone pair-bond pair $$>$$ bond pair-bond pair
    (III) lone pair-lone pair $$>$$ bond pair-bond pair
    (IV)  lone pair-bond pair $$>$$ lone pair-lone pair

  • Question 8
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    Which species has the maximum number of lone pair of electron on the central atom?

  • Question 9
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    Among the following, the molecule with the highest dipole moment is:

  • Question 10
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    What is the formal charge on the chlorine atom in the oxyacid $$HOClO_2$$ if it contains single bonds ?

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