1. Zirconium By: Tiffany Harriott Chemistry 10 Honors Mr.Dimmock

2. About Zirconium Discovered by Martin Heinrich Klaproth Discovered in 1789 in Berlin, Germany Atomic Symbol : Zr Atomic Name: Zirconium Atomic #: 40 Atomic Mass (with units): 91.224 g/mol

3. Continued... Protons:40 Neutrons:51 Electrons:40

4. Continued.. Metallic Solid at room temp In Group 4: It is a transition element; our atoms have an incomplete d-sub shell, our cations have an incomplete d-sub shell In period -5

5. Isotopes

6. Continued… Electron Configuration: 4d25s2 Ionization Energy- is the energy required to remove an Electron from a gaseous atom or ion. First ionization number: 640.1Enthalpy/kJmol-1 Atomic Radius (pm): 160

7. Continued… Electro negativity: The ability of an atom in a molecule to attract a shared electron pair to itself, forming a polar covalent bond Electro negativity of Zr: Pauling Electronegativity:1.33 Sanderson Electronegativity:0.90 Allred Rochow Electronegativity:1.22

8. 3 FUN FACTS!!! Used for Artificial joints and limbs Used in Jewelry Nuclear energy uses

10. MLA Citation http://www.webelements.com/zirconium/atoms.html http://www.convertunits.com/element/Zirconium http://www.findfast.org/science-element-zirconium.htm Picture Citation http://img0040.popscreencdn.com/134925800_amazoncom-2x-got- zirconium---sticker---decal---die-cut.jpg http://img0040.popscreencdn.com/134925800_amazoncom-2x-got- zirconium---sticker---decal---die-cut.jpg http://www.theodoregray.com/periodictable/Samples/040.13/s7s.JPG http://www.periodictable.com/Samples/040.17/s9s.JPG http://upload.wikimedia.org/wikipedia/commons/b/bd/CZ_brilliant.jpg

11. The End