1. Groups of the Periodic Table

2. Groups Vertical columns on the PT Elements in the same group… – have the same number of electrons in their outer shell (Valence Electrons) – behave similarly Examples: Group 1 = 1 valence electron Group 2 = 2 valence electrons Group 13 = 3 valence electrons Group 15 = 5 valence electrons

3. Alkali Metals Group 1, Metals 1 Valence Electron Very reactive – they really want to bond Elements in this group: – Lithium (Li)-Rubidium (Rb) – Sodium (Na)-Cesium (Cs) – Potassium (K)-Francium (Fr)

4. Alkaline Earth Metals Group 2, Metals 2 Valence Electrons Less reactive than group 1, but still want to bond Elements – Beryllium (Be)-Strontium (Sr) – Magnesium (Mg)-Barium (Ba) – Calcium (Ca)-Radium (Ra)

5. Halogens Group 17 Nonmetals 7 Valence Electrons Very reactive – want to bond Elements: – Fluorine (F)-Iodine (I) – Chlorine (Cl)-Astatine (At) – Bromine (Br)

6. Noble Gases Group 18 Nonmetals, gases Have full outer shells Will NOT react Elements: – Helium (He)- Krypton (Kr) – Neon (Ne)- Xenon (Xe) – Argon (Ar)- Radon (Rn)

7. Transition Metals Contain most of the more common metals – gold (Au), silver (Ag), platinum (Pt) Can hold more than 8 electrons in their shells (up to 32!)

8. Check your understanding Take the following “quiz” on your own paper to turn into Ms. Zulick. Make sure to write your name on it! Study Island Periodic Table Quiz

9. Check your understanding 1.This element has 3 valence electrons. What group does it belong to? ________________ 2.This element reacts very similarly to Lithium when added to water. Which group does it belong to? _________________ 3.Which period on the PT is Germanium(Ge) found in? ______ 4.Give an example of an element with 6 valence electrons. ___________________ 5.Name an element that is not reactive. __________________ 6.Which group of elements on the PT does not react? _________________________