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10 September, 05:27

Which functional group is least polar? see section 2.5 (page 74). hints which functional group is least polar? see section 2.5 (page 74). sulfhydryl carboxyl. hydroxyl amino?

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  1. 10 September, 05:38
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    Answer;

    -Amino group

    Explanation;

    -Functional groups are groups of atoms that occur within organic molecules and confer specific chemical properties to those molecules.

    -A functional group can participate in specific chemical reactions. Some of the important functional groups in biological molecules include: hydroxyl, methyl, carbonyl, carboxyl, amino, phosphate, and sulfhydryl groups. These groups are usually classified as hydrophobic or hydrophilic depending on their charge or polarity.
  2. 10 September, 07:12
    0
    Least polar function group is amino

    Explanation:

    Polarity of a given functional group depends on the electronegativity difference of the atoms that constitute the functional group.

    Sulfhydryl = - SH

    Carboxyl = - COOH

    Hydroxyl = - OH

    Amino = - NH2

    Here: Oxygen 'O' is most electronegative, followed by sulfur, 'S' and finally nitrogen 'N'

    Therefore an O-H bond will be more polar than, S-H and followed by the N-H bond.

    Since the - COOH group has two electronegative 'O' atoms it will be most polar. The decreasing order of polarity would be:

    carboxyl > hydroxyl > sulfhydrl > amino
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