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underset("x")(H-N=C=O)harrunderset("y")(...

`underset("x")(H-N=C=O)harrunderset("y")(H-overset(o+)N-=C-overset(Theta)O)harrunderset("z")(H-overset(Theta)N-C-=overset(o+)O)`
which resonating structure is least stable

A

x

B

y

C

z

D

All are equivalent

Text Solution

Verified by Experts

The correct Answer is:
C
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For hydrazoic acid, which of the following resonating structure well be least stable? underset("(I)")(H-N=overset(+)N=overset(-)N)harrunderset(" (II)")(H-overset(+)N-overset(+)N=N^(2-))harrunderset("(III)")(H-overset(-)N-overset(+)N-=N)

CH_(3)-C-=CH overset(dil H_(2)SO_(4)) underset(Hg^(2+))to underset("(X)")(CH_(3)-overset(OH)overset(|)(C)-CH_(2)) harrunderset("(Y)")(CH_(3)-overset(O)overset(|)(C)-CH_(3)) By what phenomenon X converts into Y.

Examine the following resonating structures of formic acid for their individual stability and then asnwer the question given below. H-overset(O)overset(||)underset(I)(C)-OHharrH-underset(II)overset(O^(-))overset(|)(C)=overset(+)(O)-HharrH-underset(III)overset(O^(-))overset(|)(C^(+))-OHharrH-underset(IV)overset(O^(+))overset(|)(C^(-))-OH Which of the following arrangements gives the correct order of decreasing stability of the above-mentioned resonance contributors ?

Nitrous oxide (N_(2)O) may be represented by the following structures underset((a))(overset(-):underset(..)N=N^(+)=overset(..)O":")harrunderset((b))(":"N-=N^(+)-overset(..)underset(..)O:^(-))harrunderset((c))(overset(2-):overset(..)underset(..)N-N^(+)-=O:^(+)) Which of these contributes least?

RESONANCE-GENERAL ORGANIC CHEMISTRY-I-PRACTICE TEST-1
  1. Which of the following compound is non aromatic :

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  2. Which compound has least e^(-) density in benzene ring

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  3. The order of heat of hydrogenation in following compounds is:

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  4. Resonance stabilized cation is:

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  5. In an anion HCOO^- the two carbon-oxygen bonds are found to be equal l...

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  6. Compare C-N bond length in the following :

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  7. Which of the following is false for order of -l effect :

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  8. underset("x")(H-N=C=O)harrunderset("y")(H-overset(o+)N-=C-overset(Thet...

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  9. The aromatic compound would be :

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  10. Number of delocalized e^(-) pairs in squaric acid and dianion of squar...

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  11. Which of the following benzene ring has greater electron density than ...

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  12. Which of the following has the miximum number of resonating structure ...

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  13. Among the following aromatic compound is

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  14. overset(Theta)overset(..)CH(2)-underset(O)underset(||)C-CH(3) and CH(2...

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  15. Which is not stable at room temperature ?

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  16. Correct order of stability of following alkenes is

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  17. All the carbon-carbon bond lengths are equal in

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  18. The kind of delocalization involving sigma bond orbitals is scalled

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  19. Which of the following has the highest dipole moment.

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  20. in C(1)-H, C(2)-H and C(3)-H the homolytic bond dissociation energy or...

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