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Density of ice is less than that of water because of:
(a)presence of Van der Waal interaction.
(b)crystal modification of ice.
(c)open porous cage like structure of ice due to bonding.
(d)different physical states of these.

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Important Questions on Chemical Bonding and Molecular Structure
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Among the following, the paramagnetic compound is:

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The percentage of character in the orbitals forming bonds in is

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Assuming the Hund's rule violated, the bond order and magnetic nature of the diatomic molecule of is:

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Assuming 2s-2p mixing is not operative, the paramagnetic species among the following is

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Arrange the following in the increasing order of deviation from the normal tetrahedral angle:

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Which compound among the following has least ionic character?

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The dipole moment of is Debye. The dipole moment of
will be -

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Which of the following compound has Zero dipole moment -
