A single bond is a covalent bond formed between two atoms in a compound molecule by sharing a pair of electrons. It is usually indicated by a dash "-".
single bond
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Single bond, two in compound molecule
Class 1: methane, ethane, propane, butane, pentane, hexane, etc. Note: Except cyclic hexane (benzene)
Type 2: Halogen molecules such as hydrogen, fluorine, chlorine, liquid bromine, and hydrogen.
Category 3: Hydrofluoric acid, hydrobromic acid, iodine chloride, hydroiodic acid, etc.
Category 4: halogenated hydrocarbons such as difluoromethylene chloride, chloroform (trichloromethane), methylene chloride, etc.
5 types: alcohols such as methanol, alcohol (ethanol), propanol, propylene glycol, etc.
Category 6: ethers such as methyl ether, ether, propyl ether, etc.
