Important Questions of Chemical Bonding and Molecular Structure Chemistry | Zigya

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61.

The sp3d2 hybridisation of central atom of a molecule would lead to

  • square planar geometry

  • tetrahedral geometry

  • trigonal bipyramidal geometry

  • octahedral geometry


62.

Hybridisation of C2 and C3 of H3C-CH=C-CH3 are

  • sp, sp3

  • sp2, sp

  • sp2, sp2

  • sp, sp


63.

Nitrogen forms stable N2 molecule, but phosphorus is converted to P4 from P2 because

  • - bonding is strong in phosphorus 

  • -  bonding is weak in phosphorus 

  • double bond is present in phosphorus

  • single P-P bond is weaker than N-N bond


64.

Which of the following ion is diamagnetic?

  • Nd3+

  • La3+

  • Tb3+

  • Er3+


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65.

An aqueous solution of titanium chloride, when subjected to magnetic measurement, show zero magnetic moment. The formula of complex in aqueous solution is

  • [Ti(H2O)6]Cl4

  • [Ti(H2O)6]Cl3

  • [Ti(H2O)5Cl]Cl2

  • [Ti(H2O)6]Cl


66.

Among [Fe(H2O)6]+, [Fe(CN)6]3-, [Fe(Cl)6]3- species, the hybridisation state of the Fe atom are, respectively.

  • d2sp3, d2sp3, sp3d2

  • sp3d2,d2sp3, d2sp3

  • sp3d2, d2sp3,sp3d2

  • None of the above


67.

Which of the following ligands is tetradentate?


68.

Some of the properties of the two species, NO3- and H3O+ are described below. Which one of them is correct?

  • Dissimilar in hybridisation for the central atom with different structures

  • Isostructural with same hybridisation for the central atom

  • Isostructural with different hybridisation for the central atom

  • Similar in hybridisation for the central atom with different structures


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69.

Which of the following structures is the most preferred and hence of lowest energy for SO3?


70.

The pairs of species of oxygen and their magnetic behaviours are noted below. Which of the following presents the correct description?

  • O2-, O22- - Both diamagnetic 

  • O+, O22- - Both diamagnetic 

  • O2+, O2 - Both diamagnetic 

  • O, O22- - Both diamagnetic 


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