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a table of the elements in which elements with similar chemical and physical properties are organised in groups and periods.
a substance that can donate or accept a proton. It can act as an acid or a base.
a group of elements that are poor conductors of heat and electricity.
states that the p, d and f orbitals can only take on a second electron when all the equivalent...
electrostatic forces of attraction that keep cations and anions together in a crystal lattice...
the theory whereby molecules undergo effective collisions to form new molecules.