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the energy liberated when an electron is added to an isolated, neutral atom in the gaseous state.
the theory whereby molecules undergo effective collisions to form new molecules.
a temporary unstable high energy composition of atoms representing a transition step between the...
horizontal rows of elements in the periodic table that are arranged according to their atomic...
a substance that can accept a proton in an acid-base reaction.
mass per unit volume of a substance. The number of molecules in a particular area or a measure...