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molecule where the ratio of atoms is 1 : 5, for example PCl5
the overall change in energy in a reaction, represented by âH. The difference in enthalpy of...
the simplest type of pure substance that cannot be broken down into simpler components.
electrostatic forces of attraction that keep cations and anions together in a crystal lattice...
the difference between the energy absorbed to break bonds and the energy transferred to the...
a crystal lattice of positive kernels in a sea of delocalised electrons to which they are...