The bond order in O2- ion is from Chemistry Chemical Bondin

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 Multiple Choice QuestionsShort Answer Type

621.

Why B2 is paramagnetic whereas C2 is dimagnetic?


 Multiple Choice QuestionsMultiple Choice Questions

622.

Dipole moment of  is 1.5 D. The dipole moment of  is

  • 1.5 D

  • 2.25 D

  • 1 D

  • 3 D


623.

The hybridisation of C2 and C3 of H3C-CH=C=CH-CH3 are:

  • sp , sp3

  • sp2 , sp

  • sp2 , sp2

  • sp , sp


624.

Hybridisation of central atom in NF3 is

  • sp3

  • sp

  • sp2

  • dsp2


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625.

Which one of the following contains P-O-P bond?

  • Hypophosphorus acid

  • Phosphorus acid

  • Pyrophosphoric acid

  • Orthophosphoric acid


626.

Which of the following orbitals will have zero probability  of finding the electron in the yplane. 

  • px

  • py

  • pz

  • dyz


627.

What type of orbital hybridisation is considered on P in PCl5?

  • sp3d

  • dsp3

  • sp3d2

  • d2sp3


628.

The bond order of CO molecule is

  • 2

  • 2.5

  • 3

  • 3.5


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629.

The bond order in O2- ion is

  • 2

  • 1

  • 2.5

  • 1.5


D.

1.5

The molecular configuration of O2- is as σ1s2, σ*1s2, σ2s2, σ*2s2, σ2pz1π2py2≈ π2pz2π*2py2 ≈ π*2pz1

Bond order = Nb - Na2

                 = 10 - 72 = 1.5


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630.

The molecule having largest dipole moment among the following is :

  • CHI3

  • CH4

  • CHCl3

  • CCl4


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