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Azurite is an azure blue copper mineral, it is occasionally found as prismatic crystals, but is rarely ever faceted. More often it is found in massive form inter-grown with Malachite as a result of the weathering and oxidation of copper sulfide minerals.

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strictly, zinc, cadmium and mercury aren’t considered transition metals. IUPAC definition of a transition metal states that it must be ‘an element whose atom has an incomplete d sub-shell, or gives rise to cations with an incomplete d sub-shell‘. Zinc, cadmium and mercury all have the electronic configuration d10s2; although they commonly form +2 ions, these involve the loss of the s electrons. However, they can also exist in a +1 oxidation state.

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The chemistry of copper is dominated by the +2 oxidation state, e.g. copper(II) complex ions, but there is a substantial chemistry of the +1 state

This is a great chemistry "cheat" sheet. I give these out to students at the beginning of the year and they can use them on every test. It includes the following information: Periodic Table; Common Oxidation States; Electron Placement Diagram; Location of Outer Electrons; Common Prefixes; Diatomic Elements; Definitions of 1 Mole; Solubility Chart; Solubility Rules; Rules for Significant Digits; Flowchart for Naming Inorganic Compounds; Steps to Dimensional Analysis; Metric Conversion…