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Chemical Bondin...

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  • Question 1
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    The state of hybridization of the central atom and the number of lone pairs over the central atom in POCl3are

  • Question 2
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    Which one of the following conversions involve change in both hybridization and shape?

  • Question 3
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    Based on VSEPR theory, the number of 90 degree F — Br — F angles in BrF5is

  • Question 4
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    The species having pyramidal shape is

  • Question 5
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    For a stable molecule the value of bond order must be

  • Question 6
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    In acetylene molecule, between the carbon atoms there are

  • Question 7
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    In PO3−4 ion the formal charge on the oxygen atom of P–O bond is

  • Question 8
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    In which of the following substances will hydrogen bond be strongest?

  • Question 9
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    Which of the following unit conversion of dipole moment is correct?

  • Question 10
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    Which of the following does not contain any co-ordinate bond?

  • Question 11
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    Which of the following statements is not correct?

  • Question 12
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    The correct order regarding the electronegativity of hybrid orbitals of carbon is:

  • Question 13
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    Directions For Questions

    In the valence bond theory, hybridisation of orbitals is an integral part of bond formation. Hybridisation consists


    ofmixing or linear combination of the "pure" atomic orbitals in such a way as to form new hybrid orbitals such

    as $$sp, sp^{2} , sp^{3} ,sp^{3}d, sp^{3}d^{2}$$ etc.

    ...view full instructions

    Which one of the following molecular geometries (i.e. shapes) is not possible for the $$sp^{3}d^{2}$$ hybridization?

  • Question 14
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    The molecule in which xenon is surrounded by three lone pairs and two bond pairs is:

  • Question 15
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    Select the INCORRECT statement :

  • Question 16
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    In the electronic structure of H$$_2$$SO$$_4$$, the total number of shared electrons is:

  • Question 17
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    Directions For Questions

    A physicist wishes to eject electrons by shining light on the on a metal surface. The light source emits light of wavelength of 450 nm. The table list the only available metals and their work functions.
    Metal$$W_0(eV)$$
    Barium2.5
    Lithium2.3
    Tantalum4.2
    Tungston4.5

    ...view full instructions

    Which metal(s) can be used to produce electrons b the photoelectric effect from given source of light?

  • Question 18
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    Which of the following compound has a directional bond?

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