The angle strain in cyclobutane is from Chemistry Chemical Bondi

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 Multiple Choice QuestionsMultiple Choice Questions

261.

The calculated bond order of superoxide ion O2- is

  • 2.5

  • 2

  • 1.5

  • 1


262.

In the ionic equation

-BiO3- + 6H+ + xe- → Bi3+ + 3H2O , the value of x is

  • 6

  • 2

  • 4

  • 3


263.

Mesomeric effect involves delocalisation of

  • pi electrons

  • sigma electron

  • protons

  • None of these


264.

Angle strain in cyclopropane is

  • 24°44'

  • 9°44'

  • 44'

  • -5°16'


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265.

The number of antibonding electron pairs in O22- molecular ion on the basis of molecular orbital theory is (Atomic number of O is 18)

  • 5

  • 4

  • 3

  • 2


266.

Maximum number of molecules of CH3I that can react with a molecule of CH3NH2 are

  • 3

  • 4

  • 2

  • 1


267.

An octahedral complex is formed when hybrid orbitals of the following type are involved

  • sp3

  • dsp2

  • d2sp3

  • sp2d2


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268.

The angle strain in cyclobutane is

  • 24°44'

  • 29°16'

  • 19°22'

  • 9°44'


D.

9°44'

When carbon is bonded to four other atoms, the angle between any pair of bonds = 109°,28' (tetrahedral angle) but the ring of cyclobutane is square with four angles of 90°. So, deviation of the bond angle (angle strain) in cyclobutane.

= 109° 28' - 90°/2

= 19° 28/ 2 = 9° 44'


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269.

The correct statement with regard to H2+ and H2- is

  • both H2+ and H2- are equally stable

  • both H2+ and H2- do not exist

  • H2- is more stable than H2+

  • H2+ is more stable than H2-


270.

Arrange the following in the increasing order of their bond order

O2, O2+ , O2- and O22-

  • O22-, O2-, O2, O2+

  • O22-, O2-, O2+, O2

  • O2+, O2, O2-, O22-

  • O2, O2+, O2-, O22-


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