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CH(3)-.^(2)underset(.(1)CH(2)-H)underset...

`CH_(3)-.^(2)underset(._(1)CH_(2)-H)underset(|)overset(H)overset(|)C-.^(3)overset(H)overset(|)CH-._(4)CH_(2)-H,
`C_(1)-H,C_(2)-H,C_(3)-H`and `C_(4)-H` the homolytic bond dissociation energy is in the order :

A

`C_(2)-HgtC_(3)-HgtC_(4)-HgtC_(1)-H`

B

`C_(1)-HgtC_(4)-HgtC_(2)-HgtC_(3)-H`

C

`C_(2)-HgtC_(3)-HgtC_(1)-HgtC_(4)-H`

D

`C_(1)-HgtC_(4)-HgtC_(3)-HgtC_(2)-H`

Text Solution

Verified by Experts

The correct Answer is:
D
Bond dissocation energy can be decided by comparing stability of free radical.
`C_(2)-H` has minimum BDE as this produces highly stabilise free radical.
`H_(3)O-underset(CH_(3))underset(|)C-CH_(2)-CH_(3)`
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Knowledge Check

  • IUPAC name of C_(2)H_(5)-overset(C_(2)H_(5))overset(|)CH-overset(Cl)overset(|)CH-overset(CH_(3))overset(|)CH-CH_(2)-CH_(2)-CH_(3)

    A
    4-Chloro-3-ethyl-2-methylheptane
    B
    4-Chloro-3-ethyl-5-methyloctane
    C
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    D
    4-Chloro-5-methyl-3-ethyloctane

  • CH_(3)underset(CH_(3))underset(|)overset(CH_(3))overset(|)C-CH=CH_(2)overset(overset(+)(H)|H_(2)o)(to)'P' (major) product 'P' is-

    A
    `CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)C-CH_(2)-CH_(2)-OH`
    B
    `CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)C-underset(OH)underset(|)CH-CH_(3)`
    C
    `CH_(3)-underset(CH_(3))underset(|)overset(OH)overset(|)C-underset(CH_(3))underset(|)CH-CH_(3)`
    D
    `CH_(3)-underset(CH_(3))underset(|)overset(OH)overset(|)C-CH_(2)-CH_(2)-CH_(3)`

  • IUPAC name of CH_3-underset(C_2H_5)underset(|)overset(H)overset(|)C-underset(CH_3)underset(|)overset(C_4H_9)overset(|)C-CH_3 is

    A
    2-Butyl-2-methyl-3-ethylbutane
    B
    2-Ethyl-3, 3-dimethylheptane
    C
    3, 4, 4-Trimethylheptane
    D
    3, 4, 4-Trimethyloctane

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