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…
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.
Oxidation states of Vanadium, from up to down +2 (purple), +3 (green), +4 (blue) and +5 (yellow). Electrochemistry demonstration with a lead/platinum electrodes and a vanadyl-nitrate solution (yellow).
Oxidation Number: rule: the sum of all oxidation numbers on neutral compounds is 0; oxidation number indicates the number of electrons lost, gained or shared as a result of chemical bonding; the change in oxidation state of a species lets you know if it has undergone oxidation or reduction; the oxidation number of an atom in the elemental state is zero