NOTES #3: Binary Ionic Compounds with Multivalent Cations

1. NOTES #3: Binary Ionic Compounds with Multivalent Cations NaCl Cl- Na+ CaF2 WARM-UP: Directions- Write out the chemical formulas for the following: Sodium Chloride _________________ Calcium Fluoride _________________ Copper II Oxide_________________ F- Ca2+ CuO II* O2- Cu2+ **This is what you will learn today. 

2. B Transition many valence electrons Octet Rule NOTES #3: Binary Ionic Compounds with Multivalent Cations the charge 2+ Multivalent cationsare found in the group ____ elements (the middle of the periodic table). These elements are also known as the metals. Multimeans and valent refers to an atom’s , and thus the charge the ion will obtain based on how it obeys the . Many of the transition metals can carry multiple charges. For these elements, you have to figure out which “version” of that element you have in each compound. Chemists do this with a Roman Numeral following the metal, like #3 in your warm-up. The Roman Numeral tells you to use, so for #3, the copper ion has a charge. The Roman Numeral does NOT tell you how many copper atoms you have in the bond! Just like the compounds we looked at yesterday, the sum of charges must equal .and we can still use the when writing the chemical formula. NOT ZERO criss-cross method

4. NOTES #3: Binary Ionic Compounds with Multivalent Cations

5. NOTES #3: Binary Ionic Compounds with Multivalent Cations Transition Metals Inner Transition Metals • Exceptions to the Rule: These do NOT need roman numerals!! • Aluminum +3 * Cadmium +2 • Zinc +2 **Know these • Silver +1

6. Assessment on Page 11 is DUE TOMORROW!! NOTES #3: Binary Ionic Compounds with Multivalent Cations Isn’t this easy and FUN!!??!

9. Hg22+