Make an outline of the seperation of the following cations into their respective groups. mercury (1), barium, arsenic (II), cadmium, and sodium ions. Strontum, lead, chromium (111) and mercury (11) ions. DINE

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Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.