Important Questions of Chemical Bonding and Molecular Structure Chemistry | Zigya

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381.

During the change of O2 to O2-, the incoming electrons goes to the orbital;

  • π*2Px

  • π2Px

  • σ*2Px

  • π2Py


382.

Predict the correct order among the following.

  • long pair-lone pair> bond pair-bond pair> lone pair>bond pair

  • bond pair-bond pair> lone pair-bond pair > lone pair -lone pair

  • lone pair -bond pair > bond pair- bond pair> lone pair -lone pair

  • lone pair -bond pair > bond pair- bond pair> lone pair -lone pair

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383.

The pair of an electron in the given carbanion,CH subscript 3 straight C identical to straight C to the power of minus is present in which orbital? 

  • sp3

  • sp2

  • sp

  • sp

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384.

Consider the molecules CH4, NH3 and H2O. Which of the given statement is false?

  • The H-O-H bond angle in H2O  is larger than the H-C-H bond angle in CH4.

  • The H-O-H bond angle in H2O is smaller than the H-N-H bond angle in NH3.

  • The H-C-H bond angle in CH4 is larger than the H-N-H bond angle in NH3

  • The H-C-H bond angle in CH4 is larger than the H-N-H bond angle in NH3

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385.

Which of the following species contains an equal number of σ and Π bond? 

  • HCO3-

  • XeO4

  • (CN)2

  • (CN)2

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386.

Consider the following compounds


Hyperconjugation occurs in 

  • I only

  • II only

  • III only

  • III only

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387.

The enolic form of ethyl acetoacetate as below has

  • 18 sigma bonds and 2 pi-bond

  • 16 sigma bonds and 1 pi-bond

  • 9 sigma bonds and 2 pi-bond

  • 9 sigma bonds and 2 pi-bond

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388.

The total number of Pi bond electrons in the following structure is

  • 4

  • 8

  • 12

  • 12

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389.

The pair of compounds that can exist together is 

  • FeCl3.SnCl2

  • HgCl2,SnCl2

  • FeCl2,SnCl2

  • FeCl2,SnCl2

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390.

Which of the following molecules has the maximum dipole moment?

  • CO2

  • CH4

  • NH3

  • NH3

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