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the levels of energy in which electrons move and which have fixed amounts of energy.
a proton that forms a coÂordinate covalent bond with a water molecule H3O+
the elimination of a hydrogen halide, such as hydrogen bromide, from a halo-alkane.
any different samples of a chemical compound will be made of the same elements (will have the...
a solution containing much dissolved base in a little water.
centre part of an atom with positive charge concentrated in a tiny kernel.