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?

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

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.