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(also called allotropism) the property of some chemical elements to exist in two or more different structural forms of the same element, for example diamonds and graphite are allotropes of carbon.
forces of attraction between two naturally occurring dipoles.
force that occurs between two similar, neutral molecules. Electrons are mobile and at any one...
group or organic hydrocarbons, having single bonds between carbon atoms.
an ion that has both a positive and a negative charge on the same group of atoms.
a temporary unstable high energy composition of atoms representing a transition step between the...