The dipole moment of NH3 is 1.49 D. Can you predict the shape?
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    Chemical Bonding and Molecular Structure

    Multiple Choice QuestionsShort Answer Type

    51.

    Out of H2O and H2S, which has the greatest bond angle?

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    52.

    The dipole moment of NH3 is 1.49 D. Can you predict the shape?

    It is unsymmetrical (pyramidal).
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    53. Explain why BeH2 molecule has a zero dipolemoment although the Be-H bonds are polar.  
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    54. Can a non-polar molecule have polar covalent bonds? Give two examples.
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    55.

    The molecule of SO2 has a dipole moment. Is the molecule linear or bent?

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    56.

    What is the dipole moment of BF3 or CH4 or CCl4? What do you conclude from this value?

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    57.

    Arrange the bonds in order of increasing ionic character in the molecules:
    LiF, K2O, N2, SO2 and ClF3.

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    58. Write the electronic configuration of carbon atom in the excited state.
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    59.

    What is the percentage of s character in sp3 hybridised orbital?

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    60. What type of hybridisation is present in BF3 molecule?
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