Wednesday, 2024-12-25
The daily puzzle:
What does '*****' mean in the following text?
" In organic chemistry, amines (Usual prefix: *****) are compounds and functional groups that contain a basic nitrogen atom with a lone pair. Amines are formally derivatives of ammonia (NH3), wherein one or more hydrogen atoms have been replaced by a substituent such as an alkyl or aryl group[4] (these may respectively be called alkylamines and arylamines; amines in which both types of substituent are attached to one nitrogen atom may be called alkylarylamines). The substituent –NH2 is called an ***** group."--++--++--
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