70 likes | 177 Views
20.4 20.5 20.6 . By Patrick Gaughan . 20.4 6A elements . Tendency for metallic properties as you go down the group. Configuration n 2 np 4 Do not behave as typical metals. 20.4 6A elements . Can form Covalent bonds with other non metals
E N D
20.4 20.5 20.6 By Patrick Gaughan
20.4 6A elements • Tendency for metallic properties as you go down the group. • Configuration n2np4 • Do not behave as typical metals
20.4 6A elements • Can form Covalent bonds with other non metals • Those with D orbital's can be surrounded by more than 8 electrons • Selenium prevents cancer and is a semi-conductor • Polonium discovered by Madam Carrie. • Radioactive
20.5Oxygen • Ultra important • Paramagnetic – blue liquid • O2 • Low boiling point • Gaseous • Used in many biological processes
20.5Oxygen - Ozone • O3 • Resonate • Bond angle 1170 • Vesper model • Ozonolysis • Ozone layer Absorbs UV light UV Thermal energy O3(g) O2(g) + O(g) light wavelength < 290 nm)
20.6 Sulfur • Frasch Process • Super heated water • 60% • Sulfur oxides • SO- weak bond • SO2 –most common • SO3 – Resonance
20.6 Sulfur • Oxy acids • SO3 + H2O H2SO4 • Extremely important acid • Thiosulfate ion