A molecule is an electrically neutral group of two or more atoms held together by chemical bonds.
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- Deep in the sea
all molecules repeat
the patterns of one another
till complex new ones are formed.
They make others like themselves
and a new dance starts.
- Richard Feynman, in "The Value of Science" (1955)
- Such a shared-electron bond, first proposed in 1916 by G. N. Lewis, is called a covalent bond. The neutral collection of atoms held together by covalent bonds is called a molecule.
- John McMurry, Organic Chemistry 8th ed. (2012), Ch. 1 : Structure and Bonding
- A diatomic molecule is a molecule with one atom too many.