Question

What are the functional groups? Name the class of compounds containing $-N{{H}_{2}}$ the functional group.

Answer 1

Hint: There are several different types of structural changes in organic compounds that are functional groups. Generally organic compounds classification and types of reactions according to their functional groups only.

Complete step by step solution:
Generally, organic chemistry is dominated by the functional group approach where an inert hydrocarbon skeleton on which functional groups are attached.
$C=C, C\equiv C, C=O,-OH,-N{{H}_{2}}$ are the functional groups of alkenes, alkynes, carbonyls, alcohols, and amines respectively.
Mostly functional groups are classified into nucleophile and electrophile based on organic reactions. A functional group that brings an electron pair is called nucleophile and reactions which undergo using nucleophile are called nucleophilic reactions. For example, $-OH,-CN,-N{{H}_{2}}$, etc.
A functional group which takes away an electron pair is called electrophile and electron seeking reactions are called electrophilic reactions. For example $-R,-C=O,$, etc.
Another classification of functional groups which plays a key role in the stability of organic compounds. Those are electron-withdrawing (EWG) groups and electron-donating groups (EDG).
Electron donating group (EDG): this can be recognized by lone pairs on an atom adjacent to the $\pi $ system. For Example, $-N{{H}_{2,}}-OC{{H}_{3}},-{{O}^{-}},-OH$
Electron withdrawing groups (EWG): this can be recognized either by an atom adjacent to the $\pi $ system having several bonds to more electronegative atoms. for example, $-X,-CHO,-COOH$
From the above information, $-N{{H}_{2}}$ the group belongs to the strongly activating electron-withdrawing group

Note: Based on the characteristic of functional groups, organic reactions are classified into many categories, addition reactions, substitution reactions, elimination reactions, and rearrangement reactions. These functional groups are functionalized by the organic compounds and change physical and chemical properties from its original compound.