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Home/ Questions/Rank the following radicals in order of decreasing stability. Rank the following radicals in order of...
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lyytutoriaExpert
Asked: April 13, 20222022-04-13T08:12:55+00:00 2022-04-13T08:12:55+00:00In: Chemistry

Rank the following radicals in order of decreasing stability. Rank the following radicals in order of…

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Rank%20the%20following%20radicals%20in%20order%20of%20decreasing%20stability.%20Rank%20the%20following%20radicals%20in%20order%20of...

Rank the following radicals in order of decreasing stability.

most stable

 

least stable

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♦ Relevant knowledge

If an atom, or molecules has an electron that is not paired inside its valence shell they are called radicals. Because of this electron that is unpaired They are extremely sensitive and instabile. Examples of free radicals are:-Cl*,Br*

decreasingradicalsrank
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    Joe Evans
    2022-04-13T08:14:06+00:00Added an answer on April 13, 2022 at 8:14 am
    Concepts and Reason

    An organic (alkyl-radical) chemical species is highly reactive and contains one unpaired electron in unhybridized orbitals.

    It can also be represented by a dot. The number of alkyl group attached to an organic radical is what determines whether it is primary, secondary or tertiary. As the alkyl substituents increase at radical carbons, organic radical stability increases. This can be affected by resonance, inductive effect, and the nature of substituents.

    Fundamentals

    You can classify organic radicals based on how many alkyl substitutes are present on the carbon-radical.

    Primary organic radicals

    H3C—C—H
Primary organic radical

    Secondary organic radicals

    I-
H3C—C—CH3
Secondary organic radical

    Tertiary organic acids

    CH
H3C—C—
CH3
Tertiary organic radical

    Resonance:

    A conjugated molecule is one pair of electrons, or pi electrons, that moves through sigma bonds within the molecule. This can lead to different arrangements of electrons (resonance contributors) for the same molecules. This is known as a resonance. It is, for example:

    primary allyl radical
secondary allyl radical
less stable resonance contributor
more stable resonance contributor

    Stability of organic radiations:

    CH3
- CH3
H3C-¢-H
CH₃
H2C-Ć-CH3
H3C—¢-H
H2C
CH2

    As the substitution rate at radical carbon increases, organic radical stability is higher. Resonance can increase its stability (more double bond conjugation means a more stable structure).

    Below is the primary radical:

    Hyċ-

    Below is the secondary radical:

    HC

    Below is the tertiary radical

    НАС

    Below is the allylic radical:

    Hec-

     Ans:

    most stable
HC
HC-
НАС
least stable

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