The two most reactive groups of elements in the periodic table are the alkali metals and halogens.
The first two groups--alkali metals and the alkali earth metals--are the most reactive.
Diplomonads and parabasalids are two groups that have adapted to anaerobic conditions.
The two groups are the blacks and the whites. They react by killing eachother and and enslaving eachother. You may think, ¨well, whites weren´t ever enslaved?¨ the real question is well, the whites are not YET enslaved
The 2 main groups would be sugars and fats. Though people also sometimes burn proteins and alcohols.
The two main groups of carbohydrates are starch and sugars.
The two most reactive groups of elements in the periodic table are the alkali metals and halogens.
Disaccharides
carbonyl
The two columns of elements in the periodic table that contain the most reactive elements are columns 1 and 17, the alkali metals and halogens respectively.
Inert gasses are completely non reactive. The next least reactive would be some where in the middle of the periodic table (probably precious metals).
The first two groups--alkali metals and the alkali earth metals--are the most reactive.
two (2)
Ethers are carbon compounds that don't contain alcohol, but contain one oxygen atom (O) between two hydrocarbon groups.
Diplomonads and parabasalids are two groups that have adapted to anaerobic conditions.
Disaccharides are sugars whose molecules contain two monosaccharide molecules.
A biflavonoid is any of many compounds which contain two flavone groups.