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There are many functional groups, not just 2. Two of the most common are alcohol (-OH) and alkyl (CxHx)
Ionic bonds, in which an atom loses or gains an electron, and Covalent bonds, in which atoms share electrons.
+ and -
There are 3 main types of chemical bonds. The three main chemical bonds are Ionic, Hydrogen and Covenant.
1. Polyethylene.2. Polyester.These are the main two types of plastics;there may be many more plastics lying on the grounds of this big chunk of land[EARTH].
what are the two main types of environment
there are two main types the marine and freshwater
The two main types of friction are kinetic and static.
the two main types of communications are emailing and socialising
The two main types of friction are kinetic and static.
The two main types of economy are Command and Traditional.
what are the two main types of environment
The two main types of rockets are, Solid Fuel and Liquid Fuel
The main types are Serial and Parallel.
Metallic and non-metallic.
Light (electromagnetic radiation) forms a continuous spectrum there are no two main types.
The two types of main ideas are stated and implied ones.