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Anjali posted an Question
January 25, 2021 • 01:29 am 30 points
  • IIT JAM
  • Chemistry (CY)

Arrange the following in decreasing order of indicated c-c bond length ch ch ch-ch2 ch-ch=ch, ch

Arrange the following in decreasing order of indicated C-C bond length CH cH CH-CH2 CH-CH=CH, CH

3 Answer(s) Answer Now
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    Priyanshu kumar Best Answer

    –I effect increase the bond strength and force constant, increase of bond strength is possible only by holding two atoms closer than earlier. hence -I effect reduces bond length and increases bond strength and +I effect increases the bond length

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    order becomes 3>2>1

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    got this anjali?

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    nhi aaya sir smj

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    jyada +I effect or methyl ke case me hyperconjugation lagega to bond order kam hoga so bond length jyada hoga

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    resonance se double bond me single bond character hota hai or single bond me double bond character...

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    doubt clear?

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    yes sir..... thanks sir

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    sir online classes kb se start hongi

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    college or coaching?

  • Suman Kumar best-answer

    ethene have shortest bond length

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    this have largest bond length

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    Iit jam 2005-2018 full solution https://iitjamchemistrysolvedpapers.blogspot.com/

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    Dinesh khalmaniya 1 best-answer

    III>II>I Explanation- I has purely double bond so most restricted rotation among three and least bond length. Now more the Hyperconjugation less is the bond order so more will be the bond length. so III>II as we know that more the Hyperconjugation, more is the single bond characters in double bond

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    sir iska reason.... teeno structure me double bond h

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    got it?

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    nhi aaya smj sir

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    ye concept dhyan rkho ki jitna jada resonance or conjunction hota he double bond me single bond characters or single bond me double bond characters utne hi jada hote he

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    Ab all three ko compair kre to I me purely double bond he because koi resonance or Hyperconjugation nhi he so least bond length

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    II and III me compair kre to dono me partial double bond me mean not purely double bond or single bond. ab apn double bond ki baat kr rhe he to apne uper ek concept pda tha ki hyperconjugation jitna jada hoga double bond me single bond characters utne hi jada hoge so hyperconjugation kisme jada he?? III me na so bond length III>II

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    got it now?

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    discuss if still any doubt

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    thanks sir....

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