Atkins, Peter W. Retired, Department of Chemistry, Lincoln College/Oxford University, United Kingdom.
- Organic and inorganic molecules
- Multiplicity of bonds
- Flexibility and rigidity
- Role of double bonds between carbon atoms
- Additional Readings
The smallest unit of a compound, which consists of atoms bonded together in a unique arrangement. A diatomic molecule consists of two atoms linked together by chemical bonds. Examples include the oxygen and nitrogen of the air (O2 and N2, respectively) and the neurotransmitter nitric oxide (NO). A polyatomic molecule consists of more than two linked atoms. Examples include water (H2O), carbon dioxide (CO2), ethanol (C2H5OH), and the vast molecule of deoxyribonucleic acid (DNA) with thousands of atoms.
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